Start making the dough. Put the sour cream in a deep bowl, add sugar. The fatter the sour cream, the less flour you will need. Beat the resulting mixture with a mixer or blender for 2-5 minutes. If bubbles appear during beating, it means you can finish. Add soda.
Add half of the flour and evaluate the consistency of the dough. If the dough sticks to your hands too much, gradually add the second part.
Roll out the dough so that the thickness does not exceed 5 mm, and squeeze out the cookies with a glass or cookie cutters.
Place the cookies on a baking sheet. Preheat the oven to 180 degrees and place the cookies there. Bake for 10-15 minutes.