First, milk and water are mixed together. If solids appear after mixing, milk is not fresh. Second, the milk dripping on the nails, milk is dispersed milk is degenerate, milk droplets are spherical and stopped on the nails is fresh milk. Third, in the water bowl drops a few drops of fresh milk, if the milk solidified, indicating that the quality is good and fresh milk, if floating in the water, then the quality is poor or has deteriorated. Fourth, the appearance of milky white color is fresh milk, while the color is light yellow, milk with water-like precipitate indicates that the milk. Fifth, the milk boiled, slightly cooled, the surface of a layer of milk fat is fresh milk, bean curd-like surface appears to be milk, deterioration of milk, if the taste is bitter, sour or have other odors, indicating that the milk has deteriorated. Fresh or spoiled milk is not good for the body, so don't drink it. If you feel sorry for it, you can use it for watering (after dilution), suede shoes, squatting floors, furniture for stern leather, removing ink from clothes, etc. In addition, expired sour milk contains lactic acid, fat, etc., has the effect of beauty skin rejuvenation, it can also be used for bathing, attaining the face, etc. It is said that Cleopatra would like to use yoghurt to bathe. 3 Ply Face Mask,Surgical Face Mask,Face Masks Medical,Face Mask Surgical Disposable Shaoxing Aladdin Enterprise Co.,Ltd , https://www.xhemostat.com