For the dough, mix all the ingredients together except the flour. Then add the flour and work everything into a dough. Let stand for about 10 minutes.
Prepare the filling in the meantime.
Spread small balls of dough on the work surface, then roll them out (approx. 1 cm thick) into a circle and fill them. Seal the dough over the filling and stick it together. Then immediately fry the piraschki in hot oil, do not let it go any further! Turn in between. The oil should not be too hot, otherwise the dough will not be baked inside.
If you have a fruit filling (e.g. morello cherries, blueberries or chopped apples), add a sugar cube to each. Then the juice doesn`t run out when baking. Wait a little after baking so that the sugar dissolves completely.
Other fillings: sauerkraut, minced meat, mashed potatoes with roasted onions, vegetables (maybe leftovers from the day before), etc.
You can also freeze well-baked pirashki. Then you have a good supply and can quickly warm it up in the microwave or oven if necessary.