Place flour in large mixing bowl. Add yeast and mix well.
Cover the mixture with a clean kitchen towel and let it sit at room temperature overnight.
The next morning, stir in the baking powder and let stand for 10 minutes.
Heat about 1/2 teaspoon of the oil in a large skillet, fitted with a cover. Add about 1/2 cup of the batter and fry over low to medium heat for 1-2 minutes. When bubbles appear, cover the skillet for 15 seconds.
Turn out the pancake onto a plate, without flipping it over. Prepare remaining batter this way.