Fried and charred broad beans are inedible and harmful to health.

Protein-rich foods will produce carcinogens-heterocyclic amines when heated above 200℃. Heterocyclic amines have strong carcinogenicity and gene mutation. Generally speaking, the higher the heating temperature, the longer the heating time and the less water in food, the more heterocyclic amines are produced. Especially zoom fish and meat food, not only contain a lot of heterocyclic amines, but also other carcinogens such as benzopyrene and acrylamide.