How to ferment Idli batter in Winter in Cold Countries
My sister grinds the batter once in a week.The quantity she had mentioned below comes for 5 days.She makes idli for the first two days for both breakfast & dinner and dosa for 3 days.She uses Thanjore idli rice & plain packet of urad dal,not any particular brand.My sister's friend Sukanya in US also follows the same method to make idli.