Break the eggs, whisk slightly.
Add the yogurt, mix again.
Sieve the flour. Then add slowly while mixing. Add also the salt and the baking powder at the same time.
Add enough flour to obtain a mixture which is slightly thicker than cake mixture, but lighter than a bread dough.
Use a deep pot. Add the liquid oil. Heat it slightly. Should not be too hot or you will have the doughnuts too crusty on the outside and not cooked in the inside.
Add a spoon full of the dough press the middle to make it thinner in the middle, you can even choose to make a hole in the middle. This is done to make sure the middle part gets cooked too.
Make sure they do not touch each other. You can fry several at a time, turn sides to make brownish on all sides .
If the oil gets too hot and starts cooking too fast reduce the heat slightly.
Serve while still warm. Goes perfect with tea, cheese, jam or honey. Enjoy.