2. Mustard contains a lot of mustard oil, which has a strong spicy taste and a dull nose. It can stimulate the secretion of saliva and gastric juice, has an appetizing effect, and can relieve loss of appetite.

3. Mustard is warm, which can stimulate vasodilation, speed up blood flow, warm the stomach, regulate Shui Gu qi in the stomach, and improve anorexia, epigastric fullness and other symptoms. In addition, mustard has bactericidal effect, and isothiocyanate can inhibit the growth of microorganisms, eliminate parasites in the digestive system and detoxify fish and crabs.