Food preparation apparatus and methods

A food preparation apparatus comprising:

• a cabinet defining a food preparation chamber;
• recirculation ducting for recirculating gas from the food preparation chamber back to the food preparation chamber, the recirculation ducting including an outlet for supplying air from the recirculation ducting to the food preparation chamber and including an inlet for exhausting air from the food preparation chamber to the recirculation ducting, and the recirculation ducting including a return duct portion extending downstream of the outlet and toward said inlet for bypassing the food preparation chamber;
• a fan configured to move air in the recirculation ducting for moving the air from the food preparation chamber back to the food preparation chamber;
• and
• at least one of a heating element configured to heat air in the recirculation ducting or a cooling element configured to cool air in the recirculation ducting.