Filled savoury snack product

Abstract: The present invention concerns a savoury snack product with two layers of a whipped and baked savoury sponge and a filling in between, wherein said sponge has an a w value comprised between 0.60 and 0.85, a pH value comprised between 3.5 and 5.5 and an overrun comprised between 30 and 170 % and the filling is a water-in-oil emulsion and has an a w value comprised between 0.60 and 0.85, a pH comprised between 3.5 and 5.5 and an overrun below 150 %.

Description: The present invention concerns a savoury snack product, which is shelf stable. A shelf stable non-savoury snack is already known and launched on the market. This product is made from a sweet biscuit sponge and a sweet cream filling. This snack has a very high amount of sugar and/or other carbohydrates : this addition is necessary to stabilise the snacks by the reduction of the a w value and keep it moist and elastic in texture. Also, a sandwich type product with a shelf life of 6 months exists. It is made from crispbread and a savoury filling which is practically free of water. The a w value of the crispbread and the savoury fat filling is well below 0.60 and thus the product is very dry and crisp. Other water-in-oil emulsions, like margarine can be stored for several months, but usually under refrigerated conditions and not in combination with a dough. A savoury composite food product having a dough-based part and a filling which can be stored refrigerated for a period of 45 days is disclosed in EP-A-0 916 263. The aim of the present invention is to provide the consumer with a savoury snack , which can be kept at room temperature during at least 6 months, which has a reduced content of sugar or other carbohydrates and which has a very moist and elastic texture. The present invention concerns a savoury snack product with two layers of a whipped and baked savoury sponge and a filling in between, wherein said sponge has an a w value comprised between 0.60 and 0.85, a pH value comprised between 3.5 and 5.5 and an overrun comprised between 30 and 170 % and the filling is a water-in-oil emulsion and has an a w value comprised between 0.60 and 0.85, a pH comprised between 3.5 and 5.5 and an overrun below 150 %. The a w value above 0.60 allows to have a snack with a texture giving a good moist feeling, the acidic pH gives a good stability at room temperature with the required time of storage and the whipping of both the filling and the bakery sponge gives a well aerated product. The a w value of the snack can be measured with an Aqua Lab measurement device. The pH is measured with any available pH-meter and the percentage of whipping of both the baked sponge and the filling are measured by density measurements. In a preferred embodiment of the savoury snack according to the invention the baked sponge has an a w value comprised between 0.70 and 0.80, a pH comprised between 4.5 and 5.0 and an overrun comprised between 60 and 120 %. In a preferred embodiment of the product according to the invention, the filling has an a w value comprised between 0.70 and 0.80, a pH comprised between 4.5 and 5.0 and an overrun comprised between 30 and 70 %. The filling has a water content comprised between 5 to 20 %. Preferably, the water content is comprised between 10 and 15 %. The filling is a water-in-oil emulsion and contains from 30 to 90 % of a vegetable fat. Preferably, the amount of vegetable fat is comprised between 40 and 60 %. All the percentages in the present specification are given in weight and based on the overall composition of the filling. It is important according to the invention to have a vegetable fat, which melts in the mouth by the eating, so that the consumer has a good mouth feeling. Therefore, the fat for the filling must have a steep melting curve between 25 and 35 °C. That means that the whole vegetable fat melts below 35 °C. The vegetable fat used is taken from the group consisting of cocoa butter, cocoa butter equivalent, palm oil, hydrogenated vegetable oils, other vegetable fats. The filling is prepared from a composition comprising up to 40 % maltodextrine or glucose syrup. Preferably, the content of maltodextrine or glucose syrup is comprised between 20 and 30 % of the filling composition. The filling composition comprises further between 0.20 and 2.0 % of an emulsifier, 0.2 to 2.0 % of salt and 1 to 15 % of spices and aroma. The emulsifier used is not critical and can be any emulsifier used in the food industry for the preparation of water-in-oil emulsions. Preferably the emulsifier used is mono- and diglycerides of fatty acids or lactic acid esters of mono- and diglycerides. The spices and aroma used are those commonly used in the food industry, such as pepper, onion extract, other vegetable extracts, cheese aroma, other aromas, garlic powder, other vegetable powders. The baked sponge has a water content comprised between 10 and 25 %, based on the overall composition of said baked sponge. The baked sponge is prepared from a composition comprising up to 40 % whole egg, up to 10 % glucose syrup and up to 15 % glycerine. Preferably, the composition comprises 10 to 40 % liquid egg, 5 to 10 % glucose sirup and 1 to 5 % glycerine. The composition for the preparation of the baked sponge comprises further a sour dough, Pumpernickel, flour, starch, whey protein powder, an emulsifier and potassium sorbate. The amount of these compounds are normally known in the art. The amount of Pumpernickel is comprised between 0 and 20 %. The sour dough preparation used is normally a sour dough powder used in the food industry, the flour used is wheat flour, the starch used is wheat starch and the emulsifier used is any known emulsifier normally used in the food industry, like those mentioned above. In the savoury snack according to the invention, the ratio in weight of baked sponge/filling is comprised between 20/80 and 80/20. The snack is packaged in a flow pack, which is made from an aluminium covered propylene sheet or a polypropylene sheet. The size of the savoury snack is not critical. Preferably, the snack is square with a size of around 6 cm by 6 cm and a thickness of around 15 to 20 mm. The way of preparing the savoury snack is according to following steps : Preparation of the baked sponge The dry and liquid ingredients are mixed in a mixer. The obtained dough is whipped with a known device to 30 to 170 % overrun. The dough is made in form of sheets and baked in an oven at 170 to 260 °C for 4 to 10 min. The baked sponge is finally cooled in the atmosphere. Preparation of the filling The dry and liquid ingredients of the aqueous phase are mixed, that is the spices, aroma, maltodextrine or glucose syrup with the water. The aqueous phase is then pasteurised and stored in a buffer tank. The emulsifiers and the fats are melted and mixed in another tank and cooled between 10 and 35 °C. Both phases are then mixed, emulsified and whipped to an overrun below 150 %, preferably to 30 to 70 % overrun. Final production steps The filling is dosed on the sponge layer and a second sponge layer is put on the filling. The obtained product is cooled and the sheet is cut into pieces of squares of around 6 cm and the individual pieces of the savoury snack product are fed on a line for producing flow packs. The following description of the specification is made in relation with an example. Example A dough is prepared from a composition of 7 % of flour, 8 % corn starch, 8 % whey powder, 10 % Pumpernickel, 5 % glycerine, 9 % glucose sirup, 6 % fat, 35 % whole egg, the remaining being water and other minor ingredients. The dough is whipped to 80 % overrun ,is made into sheets and baked at 220 °C during 6 min. The filling is prepared from an aqueous phase comprising 25 % maltodextrine, 2 % sugar, 5.5 % tomato extract, 11 % water and minor ingredients like salt, aroma, lactic acid to have 50 % of the composition. The other 50 % are the fat phase comprising 49.5 % of palm oil and an emulsifier. As said above, the fat is melted and mixed with the emulsifier and said fat phase is emulsified with the aqueous phase and whipped to an overrun of 50 %. The dosing of the filling is carried out on a first baked sponge layer and a secong sponge layer is disposed on the filling. The product is cooled at a temperature where the fat is solid and cut into square pieces of around 6 cm : the packaging is carried out on a classical flow pack line. The obtained savoury snack has been kept during 6 months at room temperature and retains a good texture, good elasticity and satisfying organoleptic properties.

Claims: A savoury snack product with two layers of a whipped and baked savoury sponge and a filling in between, wherein said sponge has an a w value comprised between 0.60 and 0.85, a pH value comprised between 3.5 and 5.5 and an overrun comprised between 30 and 170 % and the filling is a water-in-oil emulsion and has an a w value comprised between 0.60 and 0.85, a pH comprised between 3.5 and 5.5 and an overrun below 150 %. A savoury snack according to claim 1, wherein the sponge has an a w value comprised between 0.70 and 0.80, a pH comprised between 4.5 and 5.0 and an overrun comprised between 60 and 120 %. A savoury snack according to any of claims 1 or 2, wherein the filling has an a w value comprised between 0.70 and 0.80, a pH comprised between 4.5 and 5.0 and an overrun comprised between 30 and 70 %. A savoury snack according to any of claims 1 to 3, wherein the filling has a water content comprised between 5 and 20 %. A savoury snack according to any of claims 1 to 4, wherein the filling contains 30 to 90 % vegetable fat having a steep melting curve between 25 and 35 °C. A savoury snack according to any of claims 1 to 5, wherein the baked sponge has a water content comprised between 10 and 25 %. A savoury snack according to any of claims 1 to 6, wherein the ratio in weight of baked sponge/filling is comprised between 20/80 and 80/20. A savoury snack according to any of claims 1 to 7 , wherein the baked sponge is prepared from a composition comprising up to 40 % whole egg, up to 10 % glucose syrup and up to 15 % glycerine. A savoury snack according to any of claims 1 to 8, wherein the filling is prepared from a composition comprising up to 40 % maltodextrine or glucose sirup.

Inventors: LINGK JOCHEN, SCHNEIDER KLAUS, LINGK, JOCHEN, SCHNEIDER, KLAUS
Applicants: NESTLE SA, SOCIETE DES PRODUITS NESTLE S.A.
Application year: 2000
Main classification: A21D13
IPC codes: A23G3, A23L1, A21D13