Cooking tanks made of AISI 316 stainless steel (alloy with exceptional resistance to corrosion even at high teperatures) of large capacity (42 liters), molded with radiused inner corners for maximum hygiene and cleanability, equipped with large foam expansion zones, with residual starch discharge device. Safety thermostat in the tank against dry running. Gas models Safety pressure switch to prevent empty tank operation. Stabilized flame burners with piezo ignition of the pilot burner. Safety tap with thermocouple and progressive adjustment of the power output independently for each tank. Electric models Armored stainless steel heating elements inserted into the tank. Thermal protectors of the heating unit. Multi-position power regulator, independent for each tank.