Dough.
Add the sifted flour, bran and salt to the cold water. It is not necessary to pour all the flour at once, it may need a little less or more. Knead the dough.
The dough should not be very steep.
Put the dough in a form greased with vegetable oil, tighten with cling film and put in the refrigerator for two to three hours (you can overnight). After the refrigerator, the dough turns out to be so obedient, soft, plastic, it does not break at all, it can be rolled out very thinly. And dumplings from such dough never fall apart when cooking.