The alkaline snacks in the supermarket include raisins, prunes, pumpkin seeds, pistachios, almonds, potato chips, dark chocolate, sweet potatoes, tea, Chinese cabbage, cucumbers and carrots. Alkaline food refers to the chemical composition of food after combustion, which mainly contains potassium, sodium, calcium, magnesium and other elements. It dissolves in water to form an alkaline solution.

The final metabolites of foods containing more minerals such as potassium, sodium, calcium and magnesium are often alkaline, such as vegetables, fruits, milk, soybeans and fungus foods. Proper collocation of alkaline food helps to maintain acid-base balance in the body. The acidity and alkalinity of food has nothing to do with the pH value of the food itself (sour food is not necessarily acidic food), which is mainly defined by the fact that food is digested, absorbed and metabolized in the human body and eventually becomes acidic or alkaline. Those that produce acidic substances are called acidic foods, such as animal viscera, muscles and plant seeds (grains). Alkaline substances are called alkaline foods, such as vegetables, melons, beans and tea.