1. Lard, the Chinese also call it meat oil or lard oil. It is extracted from pork. Its initial state is a slightly yellow translucent liquid edible oil, and it is a white or light yellow solid at room temperature.

2. The fat inside the pork and outside the internal organs is called "suet". It is generally used as industrial oil to make pastries after processing; inside the pig skin, next to or with the lean meat The fat meat mixed with each other is called "fat oil", and most of them are bought by the people for refining and cooking; the strands attached to the outside of various pig internal organs are called "water oil", because they contain a lot of water, and the cooked oil residue is not good for cooking. For food, almost no one eats it, but feeds it to livestock; the oil in pig skins is called "skin oil", and is collected as chemical raw materials during the processing of pig skins into leather. In real life, the distinction is not so detailed. Common people call them suet and water oil, and the other two names are not commonly used.