EXTRUDED ICE BISCUIT AND COMPOSITE FORZEN CONFECTIONS

Abstract: A comosite ice fonectionery article such as layered ice cake or a coated frozen stick-bar is made by co-extrusion of aerated ice fonfectionary and biscuit-like mass, wherein the biscuit-ike mass is liquid and pumpable at a temperature of 15 DEG C and above and has a biscuit-like consistency on storage and consumption and is plastic at ice cream extrusion temperature.

Description: Extruded ice biscuit and composite frozen confections Background of the invention The present invention is concerned with a biscuit, a process for its preparation and composite frozen confections containing it. In the field of ice confectionery there is a need to procuring new eating experiences and new textures. Particularly attrative is the contrast of texture between a soft aerated ice confectionery and crispy inclusions or layers. In U.S. Pat. No. 4,542,028, composite ice confection cakes comprising a multiplicity of superimposed successive thin layers of ice cream separated by interleaved very thin chocolate layers are made by successively extruding ice cream ribbons through slotted extrusion outlets on a conveyor, praying thin chocolate layers on the ice cream ribbons and cutting portions transversally to the multilayered strand. Composite ice confections are known which consist of an ice cream combined with a biscuit or a crisp wafer, in particular of the type such as cakes, bars and cones, cigars or sandwiches made of wafer surrounding an ice cream or filled with ice cream. These products must include a system which makes the biscuit or the wafer impervious to the moisture coming from the ice cream, in order to prevent it from losing its crisp nature, either during storage or during comsumption. This is usually carried out by coating either the surface of the biscuit in contact with the ice cream, or the ice cream itself, with a fatty composition, for example with chocolate or with a coating containing chocolate. It has been suggested, e.g. in USP 3,508,926, to reuse crumb or ground baked biscuit for secondary products, e.g. as inclusions in ice cream bulk. The problem to solve was that the baked food particles lost their crispness in the presence of water coming from the ice cream. In this baked food material the starch is gelatinized in the baking process. In order to solve the problem of high water absortivity of particles of food material containing gelatinized starch, it was suggested to mix the particles of food material with a mixture of a shortening and emulsifϊer, then to prewet them, preferably with a sugar sirup and to finally dry them. The resulting crunch could be used as inclusion in ice cream bulk. Summary of the invention In accordance with the present invention there is provided a mass that looks like a biscuit at 0° C or below, which is liquid from 15° C or above and which can be extruded together with ice confectionery while keeping its biscuit-like consistency on storage and comsumption. The invention also concerns a process for the production of the above product, which comprises reducing a biscuit or biscuit crumbs in particle size, as by comminution, crushing or grinding, to a particulate form, such as granular or powdered form and admixing the particles with a fat at a temperature comprised between 0° C and 30° C to form a homogeneous mass. The invention also concerns a frozen confection comprising coextruded ice confectionery and biscuit-like mass. The invention further concerns a process for the production of a composite frozen confection, which comprises pumping the biscuit-like mass at a temperature of 5 to 30° C and co-extruding the biscuit-like mass together with ice confectionery. Detailed description of the invention Preferably, the biscuit-like mass of the invention comprises a mixture of particles of baked biscuit, preferably of butter-flavored baked biscuit and a high oleic partially hydrogenated vegetable oil. Preferably, the mixture contains 40 to 60 % by weight of biscuit particles and 60 to 40 % by weight of fat. The fat preferably has a solid fat content of about 19 % at 10° C and about 2 % at Thus, a preferred product of the invention is liquid and pumpable at about 8 to 15 ° C and has a plastic consistency at ice confectionery extrusion temperature of about -5° C to -6°C, which allows it to be coextruded with ice confectionery. For carrying out the process for manufacturing the biscuit-like mass, a biscuit or biscuit crumbs is reduced by comminution, crushing or grinding, to a particulate form, such as granular or powdered form. Biscuit powder, preferably containing more than 97 % by weight dry matter may be used alone or combined with other type of dry powder ingredients selected from the group consisting of cocoa, cereal, preferably rice, milk, nuts or coffee. In the case of cocoa, cereal, milk in an amount of non biscuit powder representing preferably from 1 to 50 % by weight of the powders and in the case of nuts and coffee representing preferably from 0.5 to 15 % by weight of the powders. The particles are then admixed with a fat at a temperature comprised between 0° C and 30° C to form a homogeneous mass. The fat as employed herein refers to partially hydrogenated vegetable oil, e.g. vegetable oils commonly used in food such as cottonseed or soybean oil, unmodified coconut fat, fractionated palm oil, fractionated milk fat and mixtures of such fats. Any vegetable fat with the required melting characteristics as outlined hereinbefore can be used with similar results in the context of the invention. Dry sugar, e.g. saccharose, fructose, dextrose, glucose may be added for taste and texture in an amount representing up to 30 % by weight of the whole biscuit-like mass. Salt and spices may be added , depending on the perception expected. Natural or artificial flavours and colours may be added, depending on the perception expected. The composite products of the invention comprise alternate layers or zones of biscuit-like material and ice confectionery. In the present context of the invention, ice confectionery is an aerated ice composition, for example aerated ice cream, sherbet or sorbet or ice yogurt having a soft texture which is extruded. Aeration may be at an overrun of between 40 and 150 %, and preferably at 80 to 120 % overrun. The confectionery composition flowing through the extruder may consist of distinct ice cream, sherbet or sorbet or ice yogurt of different colour and perfumes which may be co-extruded and may contain syrups or sauces or small inclusion particles so as to produce a composite or marbled or spotted body of substantial soft texture. In addition to the contrasted ice confectionery and biscuit-like layers or zones, the composite products may contain layers or zones of additional material such as thin layers of fat-based crispy material, preferably chocolate or confectionery coating. Brief description of the drawings The invention will be further illustrated by the following description of preferred embodiments with reference to the drawings in which: FIG. 1 schematically illustrates the preparation of a layered ice cream cake, FIG. 2 is a schematical representation in perspective of a composite ice cream cake product on a tray manufactured as shown in FIG. 1, FIG. 3 schematically illustrates the preparation of a composite ice cream stick and FIG. 4 illustrates a schematical view in perspective and partly in cross-section of a composite ice cream stick product manufactured as shown in FIG. 3. Detailed description of preferred embodiments and examples In the following examples, parts and percentages are by weight unless otherwise specified. Figures 1 and 2, Example 1 In this embodiment, a layered ice cream cake is prepared. A vanilla flavoured ice cream mix containing milk solids, emulsifier, vegetable fat, butter, sugar syrup and glucose of about 37 % solids is processed in a freezer to an aerated ice cream of 90 % overrun which is extruded at -6° C. Separately, 54.5 % butter flavoured and sugar-containing comminuted short bread biscuit crumbs and 45.5 % partially hydrogenated vegetable fat (DURKEX 500) are thoroughly mixed at 20° C to a homogeneous biscuit mass which is liquid and pumpable and which is fed to extrusion dies in slot shape. The ice cream is extruded in multiple layers 1 on paper or cardboard trays 2 supported by a conveyor 3 underlaying a multiple extrusion die comprising as many extrusion horizontal slots of the breadth of the cake as layers (non represented). Between the ice cream layers 1, biscuit-like layers 4 are co-extruded at a temperature of about 15° C. In this product, the extrusion speed of biscuit-like layers 4 is about the same as the speed of conveyor 3, whereas the extrusion speed of the ice cream layers 1 is about twice that of conveyor 3, which produces wavelike ice cream extrudates 1 with interlayered biscuit-like flat layers 4. The multiple layer extrudate strand is then cut in portions by a revolving knife 5, packed and stored in cold store at - 30° C. The cake as shown in FIG. 2 has thus wave-like ice cream layers 1 and flat biscuit-like layers 4 and it is decorated at the top with biscuit crumbs 6. Figures 3 and 4. Example 2 In this embodiment, a composite extruded stick ice cream is prepared. A vanilla flavoured ice cream mix containing milk solids, emulsifier, vegetable fat, butter, sugar syrup and glucose of about 37 % solids is processed in a freezer to an aerated ice cream of 90 % overrun which is extruded at -6° C. Separately, 54.5 % butter flavoured and sugar-containing comminuted short bread biscuit crumbs and 45.5 % partially hydrogenated vegetable fat (DURKEX 500) are thoroughly mixed at 20° C to a homogeneous biscuit mass which is liquid and pumpable. The aerated ice cream mass 7 is pumped through a former 8 and vertically extruded. In the extrusion line, the former gives the shape to the cross-section of the product, depending on the shape of the extrusion die 9. A slab 10 is cut out of the extruded strand 11 by means of a conventional hot wire cutter 12. A stick 13 is inserted laterally into the cut slab 10, the cutter timing determining the thickness of the product, and the product is evacuated to further processing by the underlaying plate conveyor 14. Slot nozzles 15 are located with the former 7 and the biscuit mass is pumped through pipes 16 and co-extruded with the ice cream strand. Further processing means travelling the sticked slab through a cooling tunnel 17, where the sticked slabs are hardened in the runner 17 at about - 40° C, enrobing the cooled article with a confectionery coating of temperature of about 42-43° C by dipping in a bath 18 and wrapping the coated stick-bar in a flow-pack operation 19. The product is then stored in cold store at -30° C. As shown in FIG. 4, the stick-bar has internal stripes 20 of biscuit-like texture which confer a contrasting sensation in comparison to smoothness of the ice cream mass 21 upon consumption.

Claims: Claims 1. Biscuit-like mass that looks like a biscuit at 0° C or below, which is liquid from 15° C or above and which can be extruded together with ice confectionery while keeping its biscuit-like consistency on storage and comsumption, which comprises a mixture of particles of baked biscuit and a fat. 2. Biscuit-like mass according to claim 1, in which the fat is a high oleic partially hydrogenated vegetable oil. 3. Biscuit-like mass according to claim 1, wherein the mixture contains 40 to 60 % by weight of biscuit particles and 60 to 40 % by weight of fat. 4. Biscuit-like mass according to claim 1, wherein the fat has a solid fat content of about 19 % at 10° C and about 2 % at 21° C. 5. Biscuit-like mass according to claim 1, which is liquid and pumpable at about 8 to 15 ° C and has a plastic consistency at ice confectionery extrusion temperature of about -5° C to -6°C, which allows it to be coextraded with ice confectionery. 6. Process for manufacturing a biscuit-like mass, which comprises reducing a biscuit or biscuit crumbs by comminution, crushing or grinding, to a particulate form, such as granular or powdered form and then admixing the particles with a fat at a temperature comprised between 0° C and 30° C to form a homogeneous mass. 7. Composite frozen confection which comprises alternate layers or zones of biscuit-like material and ice confectionery. 8. Composite frozen confection according to claim 7, in which ice confectionery is an aerated ice composition, aerated ice cream, sherbet or sorbet or ice yogurt having a soft texture which is extruded. . Composite frozen confection according to claim 8, in which aeration is at an overrun of between 40 and 150 %, and preferably at 80 to 120 % overrun. 10. Composite frozen confection according to claim 7, in which the composition flowing through the extruder consists of distinct ice cream, sherbet or sorbet or ice yogurt of different colour and perfumes which are co-extruded and may contain syrups or sauces or small inclusion particles so as to produce a composite or marbled or spotted body of substantial soft texture. 11. Composite frozen confection according to claim 7, which conprises in addition to the contrasted ice confectionery and biscuit-like layers or zones, layers or zones of additional material such as thin layers of fat-based crispy material, preferably chocolate or confectionery coating. 12. Composite frozen confection according to anyone of claims 7 to 11, in the form of a cake, a bulk, a portion, a sandwich or a stick-bar. 13. Process for the production of a composite frozen confection, which comprises reducing a biscuit or biscuit crumbs by comminution, crushing or grinding, to a particulate form, such as granular or powdered form, admixing the particles with a fat at a temperature comprised between 0° C and 30° C to form a homogeneous mass, pumping the biscuit-like mass at a temperature of 5 to 30° C and co-extruding the biscuit-like mass together with ice confectionery.

Inventors: ROSENDE SAAVEDRA MANUEL HUMBER, ROSENDE SAAVEDRA, MANUEL, HUMBERTO
Applicants: NESTLE SA, ROSENDE SAAVEDRA MANUEL HUMBER, ROSENDE SAAVEDRA, MANUEL, HUMBERTO, SOCIETE DES PRODUITS NESTLE S.A.
Application year: 2001
Main classification: A23G9
IPC codes: A21D13, A23G9