It is made by soaking and grinding lentils and rice batter. This ground batter is then fermented overnight to give the dosa its characteristic soft and crispy texture. This masala dosa recipe will give you a restaurant-style or hotel style masala dosa, where the dosa is crisp and served with delicious potato masala. Masala dosa is a famous South Indian tiffin snack popular not only in India but outside India too. Masala dosa is on the menu list of many North Indian restaurants too. Though making masala dosa is a long process, but its worth it. Ratio of rice to lentils is 3:1 and urad dal to tur dal is 3:1 in simple words: 3 bowls rice 3/4 bowl urad dal 1/4 bowl tur (arhar) dal (for crispiness) soak them in water for 6-7 hours. Remove the water and grind them to thick paste. you can add water to adjust consistency. pour it into an airtight container and salt and mix properly. close the lid. Keep it at a warm place to ferment for 7-8 hrs. after fermentation the batter rises. the batter is now ready. you will also see tiny air pockets in the batter. stir it before making DOSA. spread it on a nonstick pan in circular way.