There are various methods to heat and cool food product in cooking equipment. The application will dictate the best combination of methods and configurations ranging from stay-bolt or dimple jacket designs, to injected steam and thermal screw heating options. On equipment solutions that use a heating jacket, a dual zone design may add versatility to operations. Heating zones can be engineered for two separate zones that heat or cool independently. The first chamber forms the bottom of the cooker tub to the centerline of the agitator. This zone has independent controls and can be used for small batches. The upper chamber can be activated to heat when the batch size and application demand. The best-use application for dual zones are test market runs, small recipe variations, and staged cooking. Zoned heating jackets provide savings in time, energy, and cost for partial batch production. Depending on the application, significant efficiencies can also be realized by starting the batch in the first zone and adding the second zone to finish the batch. The advantage of dual zones heating jackets is versatility of batch cooking processes and significant savings in energy costs. The tenured sales and engineering teams in the Mepaco group are driven and dedicated to solving cooking and processing problems for industrial food processing customers.