1. A method for manufacturing a multilayer heat-treated food product, comprising the steps of: (i) providing a product base to said food product (ii) subjecting the product base by extrusion cooking process a multilayer extrusion head for producing a multilayer heat-treated food produkta.2. A method according to Claim. 1, wherein the opening of the multilayer extrusion die and a multilayer heat-treated food product constitute one continuous fazu.3. A method according to Claim. 1 or 2, wherein the extrusion-cooking process is carried out at a temperature from 75 ° C to 200 ° C.4. A method according to Claim. 1 or 2, wherein the pressure on the base product before exiting the extruder is from 50 to 150 bar.5. A method according to Claim. 1 or 2, wherein the extrusion-cooking process is carried out at a rate that provides the feed rate of from 80 to 150 kg product base / chas.6. A method according to Claim. 1 or 2, which is continuous sposobom.7. A method according to Claim. 1 or 2, wherein the product is filled by filling the corresponding multi-layer coextrusion precooked food product with a corresponding nachinkoy.8. A method according to Claim. 1 or 2, wherein the base product has a moisture content of from 2% to 15 wt.%. 9. A method according to Claim. 1 or 2 which does not include a separate molding operation, such as lamination, lamination, molding and dr.10. The heat-treated multilayer food product produced by the method according to any one of the preceding claims. 1-9.11. The heat-treated multilayer food product according to claim. 10, which is a single continuous kusok.12. The heat-treated multilayer food product according to claim 10 having:. (I) from 65% to 70% porosity and / or (ii) an average wall thickness of 60 to 110 mkm.13. Termoobrabota1. Способ производства термообработанного многослойного пищевого продукта, включающий стадии:(i) обеспечения продукта-основы для указанного пищевого продукта(ii) подвергания продукта-основы процессу экструзионной варк
