Milk is a product enriched with nutrients and vitamins. Good milk has a sweet taste, it is colored white with a yellow tinge. If the milk has a blue tint, it means that the cream has been skimmed off the milk or it has been diluted with water. Whole milk should contain at least 3.2% fat. A drop of whole milk dipped in a Cup of cold water does not spread out, but settles. If you remove the spoon from whole milk, then the drops of this milk should not quickly flow off the spoon.