Add maida, salt, sugar, baking soda, and baking powder. Knead the dough by adding curd and water. Cover the dough for 2 hours. Make small balls and add nigella seeds to them. Roll the ball with a rolling pin to a roti shape. Place it on hot Tawa and cook both sides. Your Kulche is ready to serve. You can also brush it with butter, but that is optional.