Operate your refrigerator between 3-5°C. Wait for the food you take out of the freezer to thaw before cooking. Do not put hot food in the refrigerator immediately. Putting your food in the refrigerator without cooling it will cause your refrigerator to consume more energy and cause bacteria to grow in the food. If you prefer ceramic or glass materials for your oven dishes, reduce the temperature of your oven by 20°C. Since these materials conduct heat better than other materials, they will give the same result. To prevent heat from being wasted, make sure that the width of your pot and pan is the same size as your stove. Keep the lids of the containers you use while cooking closed. Place the food on the upper shelves of your oven. Thus, reduce your cooking time by 20 percent.