Abstract: A system for preparing food that includes a holder for holding the food and an apparatus. The apparatus includes a processing chamber that is RF-impermeable and air-impermeable, a holding device for holding the holder inside the processing chamber, an RF-antenna to radiate RF-energy to the inside of the processing chamber for heating the food inside the holder, a fan for circulating the air in the processing chamber through an air-permeable side and through the holder, and a heater to provide heat to the circulated air. The fan and the heater are to air fry the food inside the holder. The processing chamber includes a top shell having a top inner space and a top rim forming an access opening to the top inner space, and a bottom shell having a bottom inner space and a bottom rim forming an access opening to the bottom inner space. In a closed position, the top shell and the bottom shell are to envelop an interior space that includes the top inner space and the bottom space.