Soak Parboiled rice and urad daal (with fenugreek seeds) for 5 hours separately. Now drain the water and grind rice to form smooth paste and in the same way grind soaked urad daal to form paste.

Now blend both together so that it mix well. Add some salt and water if necessary. Cover batter with a lid and keep in warm places for 9 hours (Fermentation process).

Now in a Microwave safe glass bowl add jeera, oil, mustard seeds, onion, curry leaves, hing, turmeric powder and allow to microwave (100%) for 3 minutes and then add boiled mashed potatoes and again microwave for 3 minutes. Keep it aside.

Select menu and press start (Preheat process).

Take a big spoonful of dosa batter, pour it on tawa and spread the batter in a circular motion to get thin and round dosa shape.

After beeps, put the tawa on high rack and press start.

When beeps, fill the stuffing and fold the dosa from both the ends.

In a big vessel put all the malai and blend with a hand mixer till it solidifies into butter and separates from residual liquid.

Wash this white butter in cold water as couple of times, so as to remove any remaining smell of milk.

Now collect all the butter in a Microwave safe glass bowl and keep in the microwave. Select menu and press start.

When beeps, stir it properly with the spoon (not plastic) and again press start.

After beeps, allow it to stand for 5 minutes and then strain it through stainless steel strainer into a glass jar and then store it.