In the middle of the flour mixture, make a recess, break 2 chicken eggs, pour in sour cream, knead the dough. You do not need to achieve a particular smoothness and uniformity, long knead dough, enough with your hands to form a billet of the dough so that it gathered into a ball, cover with cling film, then send the ready dough in the fridge overnight. This dough is perfectly stored for a few days in the refrigerator or a couple of months in the freezer.