Onions are tubular. Bulb solitary, cylindrical, sparsely ovoid-cylindrical, with enlarged base.
The smell of onion contains volatile oil and capsaicin, which is pungent. Anyone who has eaten onions knows that onions have obvious pungent smell, especially raw onions, and cooked onions will taste much lighter. Onion cultivation has a long history and is widely distributed in China, with Shandong, Hebei, Henan and other provinces as important producing areas.
The smell of onion can dispel the peculiar smell in greasy and heavy dishes such as fishy smell, produce special aroma, have strong bactericidal effect, stimulate the secretion of digestive juice and stimulate appetite. Green onions are rich in nutrition and have many benefits to the human body. In daily life, if you like to eat green onions, you might as well eat more. However, it should be noted that some friends with bad stomachs and poor eyesight still try to eat less green onions in their lives, so as not to be counterproductive.