The invention concerns a heat processing device (100, 200) for co-extruded sausages (S), said device (100, 200) comprising in series:a precooking device (104) intended to precook the sausages (S) deposited by a device (102) and consisting of a hot-water bath, the precooking device (104) taking the form of a chute (114) having a zero or slightly descending slope between an intake area (116) where the sausages (S) are deposited by the device (102) and an outlet area (118) where the sausages (S) leave the precooking device (104), the precooking device (104) comprising ejection means (124) designed to eject water upstream of the intake area (116) so that the water stream generated has an orientation substantially parallel to the longitudinal axis of the chute (114),a cooking device (108) intended to cook the sausages (S) thus precooked and consisting of a second hot-water bath, anda discharge device (112) intended to discharge the sausages (S) thus processed.
