To prepare khiru crush above ingredients with necessary water..then add 1 teaspoon soda bicarbonate to the batter...Mix it well and cover it with tight lid....Put it in the sunlight for 3 to 4 hours for fermentation..Now batter become fluffy and fermented...

Add salt to taste in the batter and stir it well also add require water to make it liquid..now it is ready to make dosa..

Let's prepare sambhar..for that first of all take tur dal,chana dal,1tsp fenugreek seed and wash it properly for 3 times..add 1 chopped tomato in it.Then boil it in cooker..for 4 whistles

After 15 to 20 minutes you can open the cooker...Take all dals,add 6 cup water into it and crush it well

Add salt,chill powder,turmeric powder, dhaniya jeera powder and stir it...boil it on the medium flame for 15 minutes..

For Tadka....take 2 tablespoon oil and boil it..add 1 tsp mustard seeds and 1tsp cumin seeds...when it started burning add pinch of asfeotida and curry leaves in it...add 1 chopped tomatoes and 2 chopped onions...stir it and mix it well. Then add it into boiling sambhar

Again take 1 teaspoon oil and 1/2 tsp mustard seed for tadka boil it and add pinch of asfeotida,curry leaves and red chilli powder.Then pour it into sambhar,also add boiled drumsticks and sambhar masala.Add lemon juice and 2-3 kokam in it...also add 1 tsp jaggery if you want (optional)

To make dosa first heat dosa tavi...sprinkle some oil on it...Take dosa khiru (batter)and spreads it round and round to form circle.. grease it with butter if you want butter dosa..cook it until it become golden brown.Fold it in cylindrical or triangular or cone shape...Serve it in the plate with coconut chutney and sambhar..

To prepare coconut chutney take all Ingredients of it into mixie jar...pour some water and finely crushed it until it have smooth texture..add salt to taste