Grinding Dosa or idly batter in grinder will get soft and fluffy idlies. After coming here to Singapore, I do not own a grinder. I jus manage in grinding in mixie. For 2 or 3 times when i ground the batter, the idlies were not soft. My MIL used to soak rice and urad dal for appam in refrigerator.Then this idea clicked me. I tried soaking in same format and grinding the batter. Its working fine and I get soft fluffy idlies and crispy dosas.