Eggplant is a food that people often eat. Eggplant that is not cooked can't be eaten. Because eggplant contains a lot of solanine, eating too much may lead to poisoning. Solanine has a strong stimulating effect on the gastrointestinal tract and an anesthetic effect on the respiratory center, and poisoning will occur when the human body ingests it in large quantities. However, a small amount of solanine can effectively inhibit cancer cells and has antioxidant effect. Solanine is insoluble in water, so it cannot be removed by blanching and boiling. You can add some vinegar when cooking, which helps to destroy and decompose solanine.