Mix the oil into the flour. Make a hole in the middle and add the dahi and enough warm water to form a soft pliable dough. Divide the dough into small tangerine sized pieces, flatten each piece between the palms of your hands and dip each one in flour. Roll out one at a time into circles. Spread lightly with softened butter and sprinkle with plain flour. Fold in half and repeat the process. Fold into a quarter and spread with butter again. Sprinkle plain flour on the quartered pieces sprinkle with flour again, gather up the 3 corners and roll gently between your palms to form a ball.