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方法一:好牛奶不挂杯。买来的牛奶(没有煮过或微波炉加热过的)迅速倒入干净的透明玻璃杯中,然后慢慢倾斜玻璃杯,如果有薄薄的奶膜留在杯子内壁,且不挂杯,容易用水冲下来,那就是原料新鲜的牛奶。方法二:滴奶辨质。冷水的碗里滴几滴牛奶、奶汁凝固沉底者为质量较好的牛奶,浮散的说明质量欠佳。方法三:看奶皮辨质量。煮牛奶可观察在煮开冷却后表面的奶皮。表面结有完整奶皮的是好奶,表面奶皮呈豆腐花状的是坏奶。
Method one: good milk is not hanging cup. Bought milk (not boiled or microwave heated) quickly into a clean transparent glass, and then slowly tilt the glass, if there is a thin film of milk left in the wall and cup, easy to use water Rushed down, that is raw fresh milk. Method two: milk quality differentiation. A few drops of milk in a bowl of cold water, milk coagulation Shenji the better quality milk, poor quality of the description of the poor. Method three: see milk quality identification. Cook milk can be observed in the milk after cooling the surface of the milk skin. The knot on the surface has a complete milk skin is a good milk, the surface of the skin was curd bean curd is a bad milk.