If the yogurt is foamy, it is bad. You cannot drink such yogurt. Qualified yogurt generally condenses the milk evenly and delicately without bubbles. There may be a small amount of whey on the surface, which is a clear water-like liquid. The smell is light and has a certain milky aroma; while some spoiled yogurt has no It condenses into lumps, usually in a liquid state, sometimes with bubbles, turns dark yellow or green in color, and emits a strong sour smell or alcoholic fermentation smell.

What is the reason why yogurt becomes thinner at room temperature?

When yogurt is at room temperature or after stirring, thin water will appear. This is because the inside of the yogurt The network structure formed by the lines is destroyed, causing the whey to separate out, and then it becomes loose.

How to tell if yogurt is bad?

1. Look at the packaging

First check the shelf life of the food. If it is expired, you must not drink it. , and then check the shape of the package. If the package is bulging, it means that the yogurt has deteriorated and produced a lot of gas. If this happens, you should drink it again.

2. Depend on the storage environment

Yogurt is generally stored in a refrigerator or freezer between 2 and 6 degrees Celsius. The shelf life is generally 3 to 5 days. If placed at room temperature , then the yogurt will go bad easily, especially in hot summer.

3. Look at the shape

If the yogurt curd is uniform, delicate, uniform in color, and there are no bubbles coming out. If there is a small amount of whey on the surface, it is qualified yogurt; if the yogurt does not coagulate into lumps and is in a liquid state, with a layer of water on the surface, bubbles emerging, and the color turns yellow or green, it is spoiled yogurt.

4. Smell the smell

If you smell milk, the yogurt with a lighter smell is qualified yogurt; if you smell a strong sour smell or mold fermented by alcohol, The taste is that of spoiled yogurt.

5. Taste

The taste and texture of spoiled yogurt are not smooth. If you drink yogurt regularly, you will immediately notice the difference.