Freezer and Microwave Microwave is the ideal freezer partner to defrost and cook food. Evaporation must be allowed during defrost process, by removing the container’s lid or pricking the freezer bags. Do not put metal cutlery inside the microwave. It is advisable to remove the clips of freezer bags, even if they have a plastic cover. Depending on the food and its preparation, it is possible to take it directly from the freezer to the microwave. In special cases it is advised to put food aside from freezer before microwave cooking. .