The definition of real milk is. . . Pure milk is no longer watered, is it? At present, most dairy products are drinks, and it is normal to mix water. In addition, the ingredients are definitely not as high as pure freshly squeezed unprocessed milk, only milk has been processed through many processes. If you want to drink more milk, it is important to see if there are too many additives. If you want to drink good milk, the shelf life is usually within 3~7 days.