May cause stomach trouble: Frozen food itself is harmless, but it is not as fresh as it is from the point of view of nutritional components, but it is not harmful, just because the relative lack of nutritional elements in frozen food will endanger physical and mental health.

Moreover, vegetables and fruits in quick-frozen dumplings have salt, and contact with salt is more likely to cause sodium nitrite. Eating too much sodium nitrite is very likely to cause cancer, so it is better to eat fresh sodium nitrite.

Extended data:

Precautions:

When buying, we should first observe whether the packaging of quick-frozen dumplings is complete and whether the appearance is uniform. If it is found that the quick-frozen dumplings have been thawed and softened, and there are obvious cracks, deformation and adhesion, or the packaging bags are frosted, it is best not to buy them.

Frozen jiaozi should not be thawed on the way home after purchase, and those that are not eaten immediately should be stored in the freezer.

Quick-frozen dumplings can be stored for 3 months at-18℃. It is particularly important to note that the shelf life cannot exceed the shelf life indicated on the label, because even under freezing conditions, microorganisms will grow slowly, and nutrients, taste and umami will be affected.

Baidu Encyclopedia-Quick Frozen jiaozi

People's Network-The key to quick-freezing jiaozi is the safe temperature.

People's Network-Frozen food has hidden dangers. Too much frost is stale.