The fat cow is actually beef, but it is not the original beef. It is processed and sliced after a series of treatments, just like bacon is pork, it is the processed meat of pork.
In fact, it generally refers to high-quality beef, which is sliced and turned into fat beef. It smells delicious in hot pot. After the hot pot is served, the fat cow will turn gray and then put the seasoning, which is simply delicious.