Mustard, also known as mustard powder, potato and mustard powder, is generally divided into green mustard and yellow mustard. Yellow mustard originated in China and is made by grinding the seeds of mustard. Green mustard originated in Europe and is made of horseradish. After adding pigment, it is green, its pungent smell is stronger than that of yellow mustard, and it has a unique aroma. Mustard is slightly bitter, spicy and fragrant, and has a strong irritation to the tongue and mouth, and its taste is very unique. Mustard powder has a fragrance when it is wet, has a strong pungent taste and tears, and has a stimulating effect on taste and smell. Can be used as a condiment for pickles, pickled raw meat or salads. It can also be used as a delicious seasoning for sashimi with soy sauce.