Cheese refers to fermented dairy products. Its properties are similar to ordinary yogurt. Both of them are made by fermentation process and contain lactic acid bacteria that can protect health. However, the concentration of cheese is higher than yogurt, and it is similar to solid food, so its nutritional value is richer.

Milk is one of the oldest natural drinks, known as "white blood", and its importance to human body can be imagined. As the name implies, milk is expressed from a cow. In different countries, milk has different grades. Milk is rich in minerals, calcium, phosphorus, iron, zinc, copper, manganese and molybdenum. The most rare thing is that milk is the best source of calcium for human body, and the ratio of calcium to phosphorus is very suitable, which is beneficial to the absorption of calcium. There are at least 100 complex species, and the main components are water, fat, phospholipids, protein, lactose and inorganic salts.