Beat the egg in a bowl, stir until smooth and stir in the sour cream. Fold in the flour and salt and stir with milk until smooth. The dough should not be liquid, but it should flow.
Heat the oil in a non-stick pan and add the batter. As a rule, it will not flow apart by itself, in this case it will help a little and cover the entire bottom of the pan. Bake for approx. 5-8 minutes and during this time carefully turn once when one side is lightly browned.