Semi-liquid food is a food form that is in between solid food and liquid food. The food is thin, soft, easily digestible and chewable from the appearance and contains foods such as puree, egg custard, minced meat porridge, inner fat tofu, wontons, noodles, egg soup, meat puree, vegetable puree and sesame paste. Because this kind of semi-liquid food is easier to chew and digest, nutritious and varied, with enough calories and proteins, it is more suitable for infants and young children, toothless elderly and patients. Generally semi-liquid food is mainly for people who are ill, such as those who have stomach diseases, before and after surgery. In the preparation of semi-liquid food, it is usually cooked with water, chopped or pureed with a knife, or ordinary food can be beaten into a paste with a wall-breaker.