Onions, also called shallots, are spicy and slightly sweet. It is a highly nutritious and well-cooked ingredient. Because of its unique fragrance, many people like to put onions when cooking. There are many functions and functions of onions. The nutritional value of onions is also quite rich. The selection and preservation methods of onions need to be paid more attention. When eating onions, Also, always pay attention to the taboos and taboos to follow, so as to achieve healthy and nutritious consumption!