Dosa is a fermented crepe made from rice batter and black lentils. It is a staple dish in South Indian states . Dosa, a common breakfast dish and street food, is high in carbohydrates, and contains no sugar or saturated fats. As its constituent ingredients are rice and urad dal, it is also a source of protein.The fermentation process increases the vitamin B and vitamin C content. Masala dosa was listed as one of the World's 50 most delicious foods compiled by CNN. Today I am sharing with you a very delicious butter onion masala dosa. I am sure once you try you will love it.