Coextrusion method with coextrusion hollow needles

Method for producing a food product (5) comprising a solid casing coating at least one stuffing from a food base (3) for forming the casing of the product and at least one stuffing food material (4) in a coextrusion device (1) comprising a coextrusion die (6) fed with the food base and the stuffing materials, characterised in that it comprises the following successive stages:

• forming in the first section (S1) of the die (6) the casing which solidifies by cooling, said first section being traversed longitudinally by at least one hollow needle (14) for transferring the stuffing, one hollow needle per stuffing material, and penetrating the second section (S2) of the die (6), the beginning of the second section being defined by the outgoing extremity of the shortest hollow needle (L1);
• stuffing in the second section (S2) of the die the solid casing formed in the first portion of the die with the stuffing material(s) coming out of the hollow needle(s) (14, 27, 28, 29) traversing the first section;
• recovery of the product comprising the external casing filled with the stuffing material(s) at the outlet (21) of the die.