When boiling quick-frozen dumplings, the water is not easy to break after boiling with a small fire. Boil the water in the pot first, then gently put the glutinous rice balls into the pot and stir them evenly with a spoon to avoid sticking to the pot. When jiaozi floats, add cold water and repeat twice. Jiaozi floats and can be cooked.

Quick-frozen jiaozi will crack due to heat expansion and cold contraction, just like fried dumplings will crack. If you are not in a hurry when cooking jiaozi, don't let the water boil and pour it into the jiaozi. Cook jiaozi in cold water, or let them thaw before cooking. Besides, if jiaozi is not fresh, it will crack when cooked. Therefore, when choosing jiaozi, we should also pay attention to choosing jiaozi with no frost on the surface, because the frosted jiaozi is mostly thawed and then frozen, which has a great influence on the quality of jiaozi.

Shelf life premise: always keep the freezing condition: below zero 18 degrees. Otherwise, it can only be released for 1~2 months.

It is necessary to ensure that the refrigerator is always in a closed state and the freezing conditions are kept below-18 degrees, so that the frozen food can reach such a long shelf life. If it is an open refrigerator in a supermarket, or the refrigerator at home is not lower than-18, the frozen food will expire after 1~2 months.

Self-made food should be sealed, bagged and frozen for 3~5 days. Some people have the habit of wrapping jiaozi at home, and sometimes they think about quick-freezing when they have too many bags, and then eat them in a few days, but they should also be quick-frozen. Food should be sealed in a bag, isolated from the air, and can be stored for 3~5 days after quick freezing. If it is not sealed, it can only be stored for 1~2 days after quick freezing and cannot be eaten again.