Broccoli is a cool food that can be eaten by the general population. It can relieve symptoms such as thirst and loss of appetite. It is both a vegetable and a fruit. The fruit contains glutathione and lycopene. Special substance, rich in nutrients. However, it is not advisable to eat immature green tomatoes because they contain toxic solanine. It is not advisable to heat it at high temperature for a long time, because lycopene is easy to decompose when exposed to light, heat and oxygen, and loses its health care effect. Therefore, heating at high temperature for a long time should be avoided when cooking.