Method:
1. Dry roast whole wheat flour along with soyabean flour on medium flame for 4-5 min. Transfer the flour in another bowl and cool it down.
2. For tempering, heat 1 tbsp of mustard oil and saute mustard seeds, cumin seeds along with both dals. Add curry leaves.
3. In flours, add curd along with prepared tempering ,water and salt to prepare idli batter. The consistency of the batter should have medium consistency neither too thick nor too soft. Lastly add eno and mix immediately.
5. Add the batter in greased idli moulds and steam the idlis for 5-7 min in steamer.
6. Cool down the idli and serve immediately with coconut chutney or green chutney.
Source : healthykadai.com
