Add a small amount of water to cook using the water in the food itself. According to information from the Food Network, waterless baking is derived from the Hakka cuisine of Cantonese cuisine, one of the eight major Chinese cuisines. Pressure cooker waterless baking is a cooking method that refers to adding a small amount of water to use the moisture of the food itself to cook the food, which can fully cook the food. Various ingredients, keeping the original flavor of the ingredients, rich in nutrients and delicious in taste.