During cooking, you can adjust cooking time by pressing Increase Key/Decrease Key to cook food to the right texture that suits your taste. However, when Preset Key is selected, cooking time cannot be customized. In winter, when room temperature is low, cooking time can be lengthened to suit the change in climate. When cooking foods that are hard to cook through, please lengthen the default cooking time and add more water into the stew pot to ensure the food will be thoroughly cooked.