In a mixing bowl, add yogurt and buckwheat flour and whisk them together with 1/2 cup of water to make a smooth batter. Add salt, mix it again and Keep it aside for 5 minutes.

Now put a pan on medium heat and add 1 tablespoon of oil. Once it's warm, add Cumin seeds.

Add Grated Ginger and Chopped Chilli and sauté for half a minute. Add rock salt, black pepper powder and mashed potatoes. Mix well and switch off the flame. Our stuffing is ready.

Take a Dosa pan/crepe pan or non stick pan and put in on low heat. Pour one ladle full of batter and spread it in round just like normal dosa/crepe.

Cook it for a minute and then sprinkle little oil all over and let it cook for another minute.

Now place two tablespoon of stuffing in the middle and scrape the dosa from sides to the centre with the help of spatula.

Fold it twice and serve it hot.