Dark tart cherries are one of the most traditional fillings for Ukrainian varenyki — sweet dumplings served with fruity sauce, or melted butter and honey, or sour cream and sugar. Their recipes vary from region to region. Varenyki I remember were mostly made with the dough enriched by soured milk or whey and eggs. There are also recipes using only boiling water for the dough. All of them have the same goal — a dumpling with a soft and pleasant texture.