1 piece serves 10 purposes, and you can make sweet and sour pork in 5 minutes! Save a lot of time and effort in the kitchen. You can boil, cook, steam, cook vegetables anhydrously, stir-fry, cook in the oven, bake bread, and boil with just one. Of course, the refrigerator and freezer can be used as storage containers, and you can cook all at once. The material is a special resin "syndiotactic polystyrene" that is strong against impact, and the main body can withstand temperatures of 230℃ (lid 150℃). You can also use the dishwasher. *The microwave oven used in the cooking guide is 700W. A time conversion table is included for the two types of 500W/600W.