Onion is a vegetable with low calorie, and it is easy to digest, which also helps digestion, that is to say, it can also promote the digestion of other foods. In addition, onions can also lose weight. Generally, people who lose weight often eat onions, and the effect of black fungus is also great. Ordinary auricularia auricula can dissolve kidney calculi and gallstones, which can relieve the pressure on the kidneys. People who don't usually eat breakfast will get this disease. You can eat onions mixed with black fungus.