According to the source, dumplings are not worth buying if:
There are multiple cracks on their surface.
Their shade tends to yellow or gray.
Minced meat stands for the "perimeter" of the dumplings.
They're stuck together.
The product is defrosted and soft to the touch.
It is also recommended to carefully study the composition of the semi-finished product. The simpler it is, the better. The classic recipe is a combination of three types of meat (pork, beef and lamb), onion, salt and pepper.
Vegetable additives, gum, starch should cause alertness — all this indicates the low quality of the dumplings.