There are three kinds of vegetarianism in concept: one is vegan, also known as strict vegetarian or vegan, which means that there are only plant foods in the diet and no animal foods; 2. Milk-egg vegetarian diet (also known as non-strict vegetarian diet) refers to a vegetarian diet based on milk and eggs; The third is milk vegetarian diet, which means that the main raw materials of milk vegetarian diet are vegetables, dried and fresh fruits, vegetable oil, flowers, "three mushrooms" (i.e. Lentinus edodes, straw mushrooms), "liu er" (i.e. tremella, yellow ear, sweet-scented osmanthus ear, white-backed ear, tremella, ear), lily, bean products, laver, kelp and seafood. Four distinct seasons and strong seasonality, the meat dishes in ancient religions refer to some plants, which will affect their temperament and desires after eating. There are five main kinds of meat dishes, collectively referred to as five meat dishes. Buddhism and Taoism have different meanings. In modern times, catering foods containing animal ingredients are wrongly called meat dishes. In fact, it was called fishy smell in ancient times. The so-called "livestock products" are the general names of these two categories.

Soybean oil is vegetarian.