The white streaks on quick-frozen dumplings may be caused by the following two situations:

1. In terms of ingredient list: Some ingredients in quick-frozen dumplings will freeze at low temperatures, forming a white color. stripe. These ingredients may be starches, proteins, or fats that were not fully mixed or dissolved during the production process. When frozen dumplings thaw, these ingredients may clump together and form white streaks.

2. In terms of production steps: If the dumpling skins and fillings are not fully stirred during the process of making quick-frozen dumplings, or if the dumplings are not fully cooked when cooking, white streaks may appear. These streaks may be caused by ingredients such as starch, protein, or fat not being fully mixed or cooked in the dumpling wrapper or filling.

To sum up, if you notice white streaks on your frozen dumplings, you can try reheating or cooking them, or check the ingredient list to make sure you are using good quality ingredients. At the same time, it is recommended to stir the dumpling wrappers and fillings thoroughly when making quick-frozen dumplings, and ensure that they are fully cooked when cooking the dumplings.