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"B COMMISSION REGULATION (EEC) No 890/78
of 28 April 1978
laying down detailed rules for the certification of hops
(OJ L 117, 29.4.1978, p. 43)
Amended by:
Official Journal
No page date
"M1 Commission Regulation (EEC) No 1465/79 of 13 July 1979 L 177 35 14.7.1979
"M2 Commission regulation (EEC) No 3479/80 of 30 December 1980 L 363 83 31.12.1980
"M3 Commission Regulation (EEC) No 1979/83 of 18 July 1983 L 195 34 19.7.1983
"M4 Commission regulation (EEC) No 2600/85 of 16 September 1985 L 248 9 17.9.1985
"M5 Commission Regulation (EEC) No 3589/85 of 17 December 1985 L 343 19 20.12.1985
"M6 Commission Regulation (EEC) No 3994/88 of 21 December 1988 L 354 24 22.12.1988
"M7 Commission Regulation (EEC) No 921/89 of 10 April 1989 L 97 40 11.4.1989
"M8 Commission Regulation (EEC) No 2265/91 of 26 July 1991 L 208 22 30.7.1991
"M9 Commission Regulation (EEC) No 2928/93 of 25 October 1993 L 265 4 26.10.1993
"M10 Commission Regulation (EC) No 852/94 of 15 April 1994 L 98 22 16.4.1994
Amended by:
"A1 Act of Accession of Greece L 291 17 19.11.1979
Corrected by:
"C1 Corrigendum, OJ L 116, 11.5.1979, p. 32 (890/78)1978R0890 — EN — 23.04.1994 — 010.001 — 1
COMMISSION REGULATION (EEC) No 890/78
of 28 April 1978
laying down detailed rules for the certification of hops
THE COMMISSION OF THE EUROPEAN COMMUNITIES,
Having regard to the Treaty establishing the European Economic
Community,
Having regard to Council Regulation (EEC) No 1696/71 of 26 July 1971
on the common organization of the market in hops (1), as last amended
by Regulation (EEC) No 1170/77 (2), and in particular Article 2 (5)
thereof,
Whereas Council Regulation (EEC) No 1784/77 of 19 July 1977 (3) laid
down general rules for the certification of hops;
Whereas, in order to ensure substantially uniform application of the
certification procedure in the Member States, it is necessary to specify
the products subject to certification, the operations involved and the
information to be given on the various documents which accompany the
said products;
Whereas, to enable control to be exercised in respect of hop cones, a
declaration signed by the individual or associated producer should
accompany certification; whereas this document should contain
information which makes it possible to identify the hops from the
moment when they are presented for certification until the certificate is
issued;
Whereas, for the purposes of determining the quality characteristics
which hops approved for marketing must possess, the moisture content
and extraneous matter content must be taken into consideration; whereas,
in view of the reputation for quality that Community hops have acquired,
the existing procedures customary in commercial transactions should be
taken as a basis;
Whereas the choice of method for checking the moisture content of hops
should be left to the Member States; whereas the methods adopted must,
however, give comparable results; whereas, in case of dispute, it is
necessary to use a Community method;
Whereas, in order to take account of current commercial practice in
certain Community regions, hops marketed seeded and seedless should
be defined and provision made for the appropriate entry on the
certificate;
Whereas, in order to ensure that users have exact information on the
origin and characteristics of products put on the market, common rules
should be laid down for the marking of packages and the numbering of
certificates;
Whereas it should be laid down that hops prepared from hops certified
unprepared may themselves be certified only if preparation is carried out
within a closed operating circuit; whereas, however, if these operations
take place in certification centres or warehouses the procedure for
subsequent certification should be simplified;
Whereas the subsequent certification procedure should also be sim-
plified where the packaging of a product is changed under official
supervision and without processing;!B
(1) OJ No L 175, 4. 8. 1971, p. 1.
(2) OJ No L 137, 3. 6. 1977, p. 7.
(3) OJ No L 200, 8. 8. 1977, p. 1.1978R0890 — EN — 23.04.1994 — 010.001 — 2
Whereas the second subparagraph of Article 1 (1) of Regulation (EEC)
No 1784/77 provides that products which are exempt from certification
should be subject to a control procedure; whereas this control procedure
must ensure both that these products cannot upset the normal marketing
pattern for certified products and that they are suitable for their declared
use and are used only by those to whom they are consigned;
Whereas the operation of this control procedure should be entrusted to
the bodies responsible for certification;
Whereas the measures provided for in this Regulation are in accordance
with the opinion of the Management Committee for Hops,
HAS ADOPTED THIS REGULATION:
Article 1
(a) ‘unprepared hops’ means hops which have undergone only
preliminary drying and packaging;
(b) ‘prepared hops’ means hops which have undergone final drying and
final packaging;
(c) ‘seeded hops’ means hops marketed with a seed content greater than
2 % of their weight;
(d) ‘seedless hops’ means hops marketed with a seed content not
exceeding 2 % of their weight;
(e) ‘isomerized hop extract’ means an extract in which the alpha acids
have been almost totally isomerized;
(f) ‘isomerized hop powder’ means a powder in which the alpha acids
have been almost totally isomerized;
(g) ‘new isomerized hop products’ means products in which not only
have the alpha acids been totally isomerized but other constituents
have also undergone alteration to a greater or lesser extent
(according to the stage at which and the condition under which the
transformation of the alpha acids has been carried out) or have been
deliberately eliminated from the final product;
(h) ‘sealing’ means closure of the package under official supervision
and in such a way that the means of clusure will be damaged when
the package is opened;
(i) ‘closed operating circuit’ means a process for preparing or
processing hops carried out under official supervision and in such
a way that no hops or processed products can be added or removed
during the operation. The closed operating circuit starts with the
opening of the sealed package containing the hops or hop products to
be prepared or processed and ends with the sealing of the package
containing the processed hops or hop product;
(j) ‘consignment’ means a number of packages of hops or hop products
with the same characteristics presented at the same time for
certification by the same individual or associated producer or by
the same processor.
Article 2
1. Every consignment of hop cones presented for certification shall be
accompanied by a written declaration signed by the producer giving:
— the producer’ s name and address,— the harvest year,
— the variety,
— the place of production,!B
!M9
!B1978R0890 — EN — 23.04.1994 — 010.001 — 3
— the land register reference or an official equivalent thereof,
— the number of packages in the consignment.2. This declaration shall accompany the consignment of hops
throughout any processing or mixing operations and in any case until
the certificate is issued.
Article 3
1. All hop cones submitted for certification shall comply with the
definition laid down in Article 1 (3) (a) of Regulation (EEC) No 1696/71
and the minimum marketing requirements set out in Annex I to this
Regulation.
2. Observance of the minimum marketing requirement relative to the
moisture content of the hops shall be checked by one of the methods
described in Annex II (B). However, the methods described in Annex II
(B) (2) must be approved by the control body and must give results with a
standard deviation not exceeding 2.0.In the event of dispute, observance
shall be checked by the method described in Annex II (B) (1).
The Member States shall communicate to the Commission the methods
which they employ.
3. Observance of minimum marketing requirements other than the
moisture content shall be checked in accordance with normal commer-
cial practice. However, in the event of any dispute, the method described
in Annex II (C) shall be used.
Article 4
For the purpose of the control methods referred to in Article 3 and
described in Annex II (B) (1) and in Annex II (C), samples shall be taken
in the following manner:
(a) Samples shall be taken, in each consignment, from at least one
package in ten and, in any case, from at least two packages in any
one consignment.
(b) The samples shall be taken and treated in accordance with the
method described in Annex II (A).
Article 5
The certificate referred to in Article 5 of Regulation (EEC) No 1784/77
shall bear the words ‘seeded hops’ or ‘seedless hops’, as appropriate.
Article 5a
The certificate referred to in Article 5 of Regulation (EEC) No 1784/77
shall bear at least one of the following texts, applied by the authority
empowered to carry out certifications:
— Certified product — Regulation (EEC) No 890/78,
— Certificeret produkt — Forordning (EØF) nr. 890/78,— Zertifiziertes Erzeugnis — Verordnung (EWG) Nr. 890/78,
— Produit certifié — Règlement (CEE) n
o890/78,
— Prodotto certificato — Regolamento (CEE) n. 890/78,
— Gecertificeerd produkt — Verordening (EEG) nr. 890/78,
—Πιστ/omikronπ/omikronιηµέν/omikron πρ/omikronϊ/omikronacuteν
Καν/omikronνισµ/omikronacuteς (Ε/OmikronΚ) αριθ. 890/78,
— Producto certificado — Reglamento (CEE) no890/78,
— Producto certificado — Regulamento (CEE) no890/78.!B
!M1
!M2
!M51978R0890 — EN — 23.04.1994 — 010.001 — 4
Article 6
1. The reference number of the certificate as referred to in Article 5 of
Regulation (EEC) No 1784/77 shall be made up of codes designating, in
accordance with Annex III, the certification centre, the Member State,
the year of harvesting and the relevant consignment.
2. This number shall be the same for all the packages in any one
consignment.
3. Before 1 September 1978, the Member States shall communicate to
the Commission a list of the certification centres and the code for each
centre. "A1In the case of Greece, "M5Spain and Portugal 3, this
information shall be communicated before the end of the third month
following the date of accession. 3
The list of these centres and their code numbers shall be published in theOfficial Journal of the European Communities . An up-to-date list shall
be published annually.
Article 7
The marking referred to in Article 1 (2) of Regulation (EEC) No 1784/77
shall be carried out in accordance with Annex IV , under supervision and
after sealing, on the unit of packaging in which the product is to be
marketed.
Article 8
1. Prepared hops produced from hops which were certified unprepared
may not be certified unless preparation took place within a closed
operating circuit.
2. If the hops are prepared in the certification centre or warehouse:(a) the certificate shall not be issued until after preparation;(b) the original unprepared hops shall be accompanied by the
declaration referred to in Article 2.
3. In every case a number shall be given to the consignment of original
hops before preparation. This number must appear on the certificate
issued for the prepared hops.
4. In order to be certified, products prepared from hops as referred to in
Article 7 of Regulation (EEC) No 1784/77 must be manufactured within
a closed operating circuit.
5. With the exception of the substances set out in Annex V , only the
certified hops and hop products referred to in Article 7 of Regulation
(EEC) No 1784/77 may enter the closed operating circuit. They may
enter only in the state in which they have been certified.
6. If, during the production of extracts manufactured by the use of
carbon dioxide, processing in the closed operating circuit has to be
interrupted for technical reasons, the representatives of the official
bodies or departments referred to in Article 1 (6) of Regulation (EEC)
No 1784/77 shall seal the package containing the intermediate product at
the point of interruption. The seals may be broken only by the
abovementioned representatives when processing resumes.
Article 8a
1. In the case of the production of hop products, officials as referred to
in Article 8 (6) shall be present at all times when processing is taking
place. They shall supervise the processing at every stage, i.e. from the
opening of the sealed package containing the hops or hop product to be
processed through to the completion of packing, sealing and labelling of
the hop product. A temporary absence is permissible, as long as it can be
assured by technical means that the provisions of this Regulation are
respected.!B
!M9
!M81978R0890 — EN — 23.04.1994 — 010.001 — 5
2. Before changing to a different batch in a processing system the
representatives referred to in Article 8 (6) shall ensure by inspection that
the processing system is empty, at least to the extent necessary to ensure
the elements of two different batches cannot be mixed. If hops, hop
products, spent hops or any other product derived from hops remain in
parts of the processing system such as blending or canning containers
while hops of another batch is being processed, these parts have to be
disconnected from the processing system by suitable technical means and
under official supervision. They may be re-connected to the processing
system under official supervision, only. A physical link between the
processing line for concentrated hop powder and that for non-concen-
trated hop powder shall not be allowed while either is operating.
3. The operators of hop-processing plants shall provide the represen-
tatives referred to in Article 8 (6) as well as the representatives of the
official national bodies responsible for ensuring compliance with the
certification system within the meaning of Article 1 (6) of Regulation
(EEC) No 1784/77 with all information related to the technical layout of
the processing plant.
4. The operators of hop-processing plants shall keep exact records
concerning the mass throughput of hops processed. For each batch of
hops to be processed records shall be drawn up which contain detailes of
the weights of the input product and the processed product as well as that
of the waste, including spent hops, non-hop materials rejected and the
presumed moisture loss. As far as the input product is concerned the
records shall furthermore contain the number as referred to in Article 5
(1) (b) of Regulation (EEC) No 1784/77 for all hop consignments
involved and the variety of the hops. If more than one variety is used in
the same batch the respective shares of their weights must appear in the
records. As regards the processed product the variety must also appear in
the records, or, if the processed product is a blend, the composition by
varieties. All weights may be rounded off to the nearest kilogram.
5. Records of the mass throughput shall be made under the supervision
of the representatives referred to in Article 8 (6) and signed by them as
soon as the processing of a batch has been completed. They shall be kept
by the operator of a processing plant for at least three years.
6. Representatives of the official bodies responsible for ensuring
compliance with the certification system shall carry out sample checks
on the premises of the hop processing plants, regularly and without prior
notice. These checks shall consist of an examination of: the work of
representatives referred in Article 8 (6); the incontestability of the
certified products, the certificates accompanying the hops, as well as the
recorded mass throughput as referred to in paragraph 4 above. The
number of checks to be carried out during a year shall not be less than
five per hop-processing plant.
7. The Member States shall report to the Commission, every year
before 30 June, the frequency, type and result of the supervisory
measures in respect of certification which were carried out over the year
preceding the said date.
8. If it is found that in the preparation of hop products components have
been used which are not permitted, or that the components used do not
conform to the information in the certificate as listed in Article 5 of
Regulation (EEC) No 1784/77, and if this is imputable to deliberate
action or serous fault on the part of the plant operator or his servants, the
Member State in question shall withdraw approval as a certification
centre from this processing plant. Approval may not be restored for a
period of at least 12 months following the date of withdrawal. On request
of the operator, approval shall be restored after two years or, in grave
cases, after three years from the date of withdrawal, at the lastest.!M81978R0890 — EN — 23.04.1994 — 010.001 — 6
Article 9
1. While they are in circulation, hop powders and hop extracts may not
undergo a change of packaging within the meaning of Article 1 (5) of
Regulation (EEC) No 1784/77, unless this is done under official
supervision.
2. Where a change of packaging as referred to in the preceding
paragraph is carried out without any processing of the product, the new
certification procedure shall comprise only:
— the marking of the new packaging,— the entry on the original certificate of this marking and the change of
packaging.
Article 9a
In the case of resale within the Community’s territory, after a certified
consignment has been split up, the product must be accompanied by an
invoice or a commercial document drawn up by the vendor stating the
number of the certificate and the name of the issuing agency. The invoice
or commercial document must also bear the following information, taken
from the certificate:
(a) for hops in cones:
— the designation of the product,
— the gross and/or net weight,
— the place of production,— the year of harvest,
— the variety;
(b) for hop products, the information given above together with the place
and date of processing.
Article 10
The products referred to in Article 1 (1) (a) to (f) of Regulation (EEC)
No 1784/77 shall be subject to the following checks:
(a) In the case of hops harvested on land owned by a brewer and used by
him in the natural or processed state:
— in respect of each crop the brewer shall before 1 November send
to the control body referred to in Article 1 (6) of Regulation
(EEC) No 1784/77 a declaration of the varieties grown, the
quantities harvested, the places of production and the areas
planted, together with the land register references or an official
equivalent thereof,
— no further checks shall be required where the hops are processed
or used in their natural state in the brewery itself. In all other
cases, the check shall be the same as described under (c) below,
with the exception of point 5.
(b) In the case of isomerized hop extracts, isomerized hop powders and
the new isomerized hop products listed in Annex VI, the processor
shall each year, not later than 31 December, declare to the control
body the quantities produced and the quantities marketed. The
packaging must bear the words ‘isomerized hop extract’, ‘isomerized
hop powder’, or ‘new isomerized hop product’ and must state the
weight or volume, the original variety, the product used and and the
percentage of the product used.!B
!M1
!B
!M9
!B
!M91978R0890 — EN — 23.04.1994 — 010.001 — 7
(c) In the case of products derived from hops and processed under
contract on behalf of a brewery, and provided that these products are
to be used by the brewery itself, the certifying body shall, when the
hops enter the establishment where they are to be processed, issue a
document on which at least the following particulars shall be entered
in the course of the processing operations:
1. a reference identifying the contract,2. the recipient brewery,3. the processing establishment,4. a description of the processed product,5. the reference number of the certificate or the attestation of
equivalence of the original hops,
6. the weight of the processed product.This document shall be given a reference number, which must also
appear on the packaging.
In the case of blends of hops, the following additional indication
must be included on the document and on the package:
‘Mixture of hops for own use; may not be marketed’.
(d) In the case of hops and hop products put up in small packets for sale
to private individuals for their own use, the weight of the package
may not exceed:
— 1 kg in the case of cones or powder,— 300 g in the case of extract, powder and the new isomerized
products.
A description of the product and its weight must appear on the
package.
Article 11
Before 1 September 1978, the Member States shall communicate to the
Commission a list of the zones or regions of production referred to in
Article 6 (1) of Regulation (EEC) No 1784/77.
"A1In the case of
Greece, "M5Spain and Portugal 3, this information shall be
communicated before the end of the third month following the date of
accession. 3
Article 12
This Regulation shall apply with effect from 1 August 1978.
This Regulation shall be binding in its entirety and directly applicable in
all Member States.!B
!M10
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!B1978R0890 — EN — 23.04.1994 — 010.001 — 8
ANNEX I
MINIMUM MARKETING REQUIREMENTS FOR HOP CONES
Characteristics DescriptionMaximum content
(% of weight)
Prepared hopsNon-prepared
hops
(a) Moisture Water content 12 14
(b) Leaves and stalks Leaf fragments from branch tendrils, branch
tendrils, leaf or cone strigs; to be classed asstalk, cone strigs must be at least 2,5 cmlong66
(c) Hop waste Small particles resulting from machine
harvesting, varying in colour between darkgreen and black and "
M6which generally
do not come from the cone; the maximum
contents indicated may include particles ofvarieties of hops other than those to becertified, amounting to up to 2 % of the
weight334
(d) In the case of ‘seedless hops’,
seedMature fruit of the cone 2 2!
M41978R0890 — EN — 23.04.1994 — 010.001 — 9
ANNEX II
A. SAMPLING METHOD
The following procedure shall be used to take samples of hop cones for
determining the moisture content and, where applicable, the extraneous matter
content:
1. Sampling
(a)Packed hops
A weight of hops proportional to the weight of the package shall be taken
from the number of packages specified in Article 4. Enough samples
should be taken to ensure that there are enough cones to be
representative of the package.
(b)Hops in a loose pile
Take equal portions from 5 to 10 different places in the pile both at the
surface and at various depths. Place sample in the container as soon as
possible. To avoid rapid deterioration, the quantity of hops must besufficiently large to be highly compressed when the container is closed.
The sample must weigh at least 100 g.
2. Mixture
The samples must be carefully mixed to be representative of the consignment.
3. Sub-sampling
After mixing take one or more representative samples and place them in a
waterproof, airtight container such as a metal box or glass jar, except where
only the extraneous matter content is to be checked.
4. Except during transport, samples must be stored in a cold place. Care should
be taken to allow the samples to return to room temperature inside thecontainer before opening for examination or analysis.
B. METHOD FOR CHECKING THE MOISTURE CONTENT OF HOPS
1. Method (i)
Samples for moisture content should not be ground. It is important that they
should be exposed to the air only for the minimum time necessary for theirtransfer from the container to the weighing vessel (which must have a lid).
Apparatus
Balance sensitive to 0.005g.
Drying oven electrically heated and thermostated to 105 to 107 °C (the
efficacy of the oven should be checked by the copper sulphate test).
Metal dishes 70 to 100 mm in diameter, 20 to 30 mm deep and provided with
well-fitting lids.
Ordinary desiccator, suitable for accommodating the dishes and containing a
desiccant such as indicator silica gel.
Method
Transfer 3 to 5 g of hops to a dish and close the lid before weighing. Weigh as
quickly as possible. Remove the lid and place the dish in the oven for onehour exactly. Replace the lid, place the dish in a desiccator to cool for at least
20 minutes and then weigh the dish.
CalculationCalculate the loss of weight as a percentage of the original weight of hops.
The maximum deviation for individual estimation is 1 %.!
B1978R0890 — EN — 23.04.1994 — 010.001 — 10
2. Method (ii)
Method using either an electronic weighing machine which dries the hops
with infra-red rays or hot air, or an electric measuring apparatus, which
registers on a scale the degree of humidity of the sample taken.
C. METHOD FOR CHECKING THE EXTRANEOUS MATTER
CONTENT
1. Determination of the leaf, stalk and waste content
Sieve five 100 gram samples using a 2 mm sieve. Collect the lupulin, waste
and seeds and separate the seeds by hand. Place the samples on one side.
Transfer the contents of the 2 mm sieve to a 10 mm sieve and sieve again.
The hop cones, leaves, stalks and extraneous matter are collected by hand
from the sieve while cone leaves, seeds, lupulin waste and some leaves andstalks pass through. All this is sorted by hand and divided into the followinggroups:
1. Leaves and stalks,2. Hops (cone leaves, hop cones and lupulin),3. Waste,
4. Seeds.
It is extremely difficult to separate the waste and the lupulin precisely.
However, it is possible, using a sieve with a mesh size of 0,8 millimetres, todetermine approximately the relative proportions of the waste and the lupulin.
When estimating the proportion of lupulin, it should be taken into account
that the density of the lupulin is four times greater than that of the waste.
The various groups are weighed and the percentage which each group
represents in the weight of the original sample is determined.
2. Determination of the seed content
Place the 25 g sample in a metal container with a lid and heat in a drying oven
for two hours at 115 °C in order to neutralize the sticky resin.
Wrap the dried sample in coarse cotton cloth and rub vigorously or beat
mechanically in order to detach the seeds from the hops. Separate the driedand finely fragmented hops from the seeds with a grinder or a 1 mm metal
sieve.
Separate any items remaining with the seeds using either a sloping surface
covered with emery paper or any other method which gives the same result,i.e. retains the stems and other matter and permits the seeds to roll off.
Weigh the seeds and determine the percentage of seeds relative to the weight
of the original sample.!
B
!M4
!M7
!M4
!B1978R0890 — EN — 23.04.1994 — 010.001 — 11
ANNEX III
CODING AND COMPOSITION SEQUENCE OF CERTIFICATE
REFERENCE NUMBERS
1. Certification centre
A number between 0 and 100 communicated by the Member States.
2. Member States carrying out certification
B for Belgium
D for Federal Republic of Germany
DK for Denmark
E for Greece
F for France
IRL for Ireland
ITA for Italy
LUX for Luxembourg
NL for Netherlands
UK for United Kingdom
ESP for Spain
P for Portugal
3. Y ear of harvesting
The last two figures of the year of harvesting.
4. Identification of the consignment
The number given to the consignment by the certifying body (e.g. 12 B 77
170225)!B
!B!A1
!B
!M51978R0890 — EN — 23.04.1994 — 010.001 — 12
ANNEX IV
MARKING OF PACKAGES
The marking shall depend on the type of package:
(a) Hop cones put up in bales or ballots:
— printing on the package.
(b) Hop powder in packets:
— printing on the packet.
(c) Hop powder or hop extract in metal tins:
— printing on the box or stamping into the metal.
(d) A sealed package containing a consignment of packets or boxes of powder or
extract:
— printing on the sealed package "M7and on each packet or box of
powder or extract in the sealed package 3.!B1978R0890 — EN — 23.04.1994 — 010.001 — 13
ANNEX V
Substances permitted in the standardization of hop extracts:
1. glucose syrups;
2. hot water extract prepared from hops.!M81978R0890 — EN — 23.04.1994 — 010.001 — 14
ANNEX VI
ISOMERIZED HOP PRODUCTS ON, OR NEAR, MARKET — NOVEMBER 1992
Product Process Use
Isomerized pellets Conventional Type 90 powder mixed
with metallic oxide (usually mag-nesium), pelleted and subjected toslow, low temperature, warming upIn replacement of standard hop pellets
in kettle, or as late addition in kettle
Extrudate (extruded hop powder) Conventional powder mixed with
metallic carbonates, oxides or hydro-xides (or mixtures thereof), forced
through an extrusion cooker (high
pressure plus temperature for shortperiod)As for isomerized pellets
Stabilized pellets As for isomerized pellets, but with no
warming upAs for isomerized pellets
Isomerized kettle extracts (including
PIKE, MIKE, IKE, IRE)Generally conventional (usually CO
2)
extracts mixed with metallic oxides,
hydroxides or carbonates (or mixturesthereof) and subjected to heating orpressure (or both). In some products,
the metal ions and metallic salts are
removed from the final mixtureIn replacement of standard kettle
extracts, or as late addition in kettle
Post-fermentation — isomerized
extractsHop extracts purified and treated as
above to give relatively pure isome-
rized alpha acid (generally in the formof alkali metal salts of isomerizedalpha acids (usually potassium))As final adjustment to beer bitterness
levels, with no effect on other beer
flavours
Post-fermentation — reduced isome-
rized extractsHop extracts purified, chemically
reduced and treated as above to giverelatively pure reduced isomerized
productsFor control of beer bitterness levels,
protection against ‘sunstruck’ taintsand enhancement of foam stability
with no effect on other beer flavours!
M91978R0890 — EN — 23.04.1994 — 010.001 — 15