The fat will solidify into a white-colored solid oil at too low room temperature. It is called pig fat in the west. Lard has a white or yellowish white color and has a special aroma of lard, which is very popular. Many people think that stir fry is not fragrant without lard. Shea butter, also known as tallow, has the special aroma and taste of butter. The refined butter is yellow and white in color and has a delicate texture. It is a common food on Western dining tables. It can be used for direct consumption or for hot-fried and baked foods. Butter is a kind of fat extracted from milk or goat's milk and one of the raw materials for butter. It is pale or yellowish in color and has a special milky aroma. It is often used to make pastry sweets. Lard is easy to deteriorate on hot days. You can put a few fennel when refining, and put a slice of radish or a few soybeans in the oil. Add a little sugar, salt or soybean oil to the oil, and it will last for a long time. After the lard is boiled, add a little sugar or salt while it is not condensing, and then seal it after stirring. It can be stored for a long time without deterioration. Lard is not suitable for cold and fried food. Food seasoned with it should be eaten while it is hot. After cooling, there will be an oily gas, which will affect people's appetite. Due to the high temperature in summer, the refined lard is difficult to solidify. Such oil affects the storage time. After refining the oil, remove it from the fire source, and when the oil temperature drops to about 80 degrees, add white sugar and stir well. The ratio of sugar to oil can be 1:15. The oil is added to sugar and poured into a porcelain jar, which can be solidified by immersing in cold water, and it is not easy to taste. Lard should not be stored for too long, especially in the summer when the temperature is high, it is easy to contact with the air to oxidize, causing rancidity and deterioration. The rancid lard will produce a "Hala flavor" and is not suitable for consumption. Lard is sweet, cool, and non-toxic. It has the effects of tonic deficiency, moistening, and detoxification. It can cure viscera, dryness, unfavorable stool, dry cough, and cracked skin. Used externally to coat the affected area with ointment.