2. Lycium barbarum leaves are cool and non-toxic. It tastes sweet and is an edible food, so don't worry too much. Lycium barbarum leaves also have the effect of clearing heat and reducing fire. After washing, it can be directly used for making tea or cooking. They can be fried with lean meat, animal offal and other foods, which can promote digestion after eating. Lycium barbarum leaves can also be used to make soup and taste better.