Brief introduction of onion, introduction of basic knowledge of onion

   onion, also known as ball onion, onion, jade onion, onion, Dutch onion, leather tooth son and so on, belongs to the Liliaceae biennial herb. Widely used in vegetable and health food industry, it is one of the main cultivated vegetables in China, and has a large proportion in the vegetable market. In the catering industry, onion is also defined as a home-cooked dish, which can be seen everywhere on the table. Because the onion is rich in nutrients, it is even known as the "queen of vegetables" abroad, with high nutritional value.