To make a pancake pie, I need thick pancakes. I will make the dough with sour milk, you can replace it with kefir. Pour sour milk into a bowl and quench the soda in it. Waiting for a reaction. Add sugar, eggs, whisk together. Sift the flour and add salt. Again, connect the whisk. The dough is quite thick, but spreads well over the pan. To avoid greasing the pan for baking each pancake, pour sunflower oil into the dough. Connect again. The dough is ready for baking pancakes.