1. Foods that are incompatible with leeks include beef: leeks cannot be eaten with beef. Leeks are pungent and warm in nature and have the effect of warming the body and supporting yang; beef is sweet and warm in nature and has the effect of replenishing qi and aphrodisiac. Eating the two together is like adding fuel to the fire, causing the deficiency fire to rise and causing gum swelling and pain.

2. Honey: The vitamin C in leeks is easily destroyed by the minerals in honey. Leeks are rich in dietary fiber, and honey is moisturizing and convenient. Eating a large amount together can easily cause diarrhea.

3. Milk: Chives and milk can be eaten together. Chives contain oxalic acid. Milk contains a lot of calcium that is useful to the human body. However, oxalic acid will affect the absorption of calcium in milk, causing a lack of milk nutrition.