Crack an egg in a bowl, add sugar and salt. Mix it together (without a mixer, just to combine the ingredients).
Pour kefir in a saucepan and heat it up on small fire for 1-2 minutes, don't let kefir get spoiled! (white whey at the bottom of the pot is normal). After kefir is warm, pour it in a bowl with the egg mixture. Mix it.
Sift flour in another bowl, than add a little of sifted flour into the mixture, mix it. Repeat till all the sifted flour is used. If the muxture is too thick, you can add a little bit if kefir, but keep in mind, that the dough should be thick enough. Sift baking soda on the dough and mixt it very quickly. Let it wait for 10-15 minutes (do not mix it any more).
After 10-15 minutes it's time to make oladi. Prehit the frying pan with oil in it, take a tablespoon and dip it in oil (it will be easier to pour thick dough i the pan). 1 Tbsp of dough is 1 oladi. Fry them on both sides. If there is no more oil in a pan, add a little. Oladi will be small, but very thick and airy. After you've used all the dough, serve hot oladi with honey/jam/berries/condensed milk/any other thing that you like.