Yogurt needs to be refrigerated at 4℃. During storage, the acidity will continue to increase, making yogurt more acidic. If the storage conditions are good, yogurt will not go bad, otherwise it will breed bacteria, yeast or Bacillus and make it go bad. This kind of yogurt can't be eaten. When you buy yogurt in hot summer, you must see if the milk seller has a freezer, otherwise the quality of yogurt will be difficult to guarantee.
Yogurt can't be heated when you drink it. You can buy it in summer and store it at room temperature for a certain period of time before drinking it in winter. Once yogurt is heated, it will kill a large number of active lactic acid bacteria, change the physical properties of yogurt, form precipitation, and the unique taste and taste will disappear.
Selection method of yogurt
1, look at the ingredients list, the first one is "raw milk", and the first one is raw milk, indicating that the milk content is high. Because yogurt is fermented from milk, it has high milk content and high nutrition. If the first place is water, it is not yogurt at all, but a yogurt-flavored drink at most.
2. Choose yogurt with high protein content. The protein content of high-quality yogurt is generally higher than 2.3%. This kind of yogurt often tastes sticky, tastes better and has sufficient nutrients. If the content of protein is too low, it may be that other additives are too high.
3. Pick yogurt with low sugar content and try to choose sugar-free or low-sugar yogurt. Some yoghurts sold in the market are not sweet, but they contain a lot of sugar. If the sugar content is not marked on the ingredient list, you can also look at the "carbohydrate" on the label. You can buy those with a carbohydrate content of 10%~ 12%, not those with a carbohydrate content of 15%.