Add yeast bit by bit to warm water, then add sugar and let it rise in a warm place.

Combine flour, sugar, egg, kefir, butter, salt and oil. Add the risen yeast and knead thorough.

Cover the dough with a dishcloth and let it rise in a warm place for 40-60 minutes.

Divide the risen dough into 4 equally sized pieces.

Flatten the dough into circle shapes and grease with salted butter.

Cut the circles into 12 pieces.

Roll up the pieces and put them in a pan lined with parchment.

Brush the croissants with whisked egg and dust with grated cheese.

Let it rise for 15 more minutes.

Bake at 350 degrees F for 15-20 minutes.

Good luck preparing! Enjoy!