Mix all the liquid ingredients, whisk with sugar, add soda – there is no need to extinguish, because the dough is on sour cream + currant, adding flour in parts, knead the steep dough. Flour can come out 3.5 cups, and maybe 4.5 – depending on the density of currants and sour cream. The dough is kneaded quickly enough. It turns out a greenish color – this is how it should be. We wrap the finished dough in a film and put it in the refrigerator for 40-60 minutes, it can lie down until the next day