There is provided a method for producing a frozen fried food for a microwave cooking comprising the step of a freezing of, particularly a very quick freezing of a deep-fat fried food, more particularly immediately after the oil-cooking thereof, at a moving speed of the freezing front exceeding 20 cmh. The common name for this manipulation is \u201carbitrage\u201d, and the intent of the perpetrators is to take advantage of lower rates associated with the delivery of telephone traffic via other routes. This keeps a fixed distance between a bar mirror unit and a sample on the sample table. This simplifies the manufacturing process of the speaker and also prevents a breakage of the lead wire that conventionally happens when the frame is turned upside down. Pressures exceeding 1 atm or below 1 atm can be created and maintained in the reaction compartment prior to, during or after heating of the slide begins.