Soak: Rinse rice, urad dal, chana dal, and fenugreek seeds. Soak them in water for 4-6 hours or overnight.
Grind: Drain the soaked ingredients and grind them to a smooth batter using a little water as needed. The batter should be thick but pourable.
Ferment: Cover the batter and let it ferment in a warm place for 8-12 hours or overnight. It should rise and become slightly bubbly.
Cook: Heat a non-stick pan or griddle over medium heat. Lightly grease it with oil. Pour a ladleful of batter onto the pan and spread it into a thin circle.
Cook:Drizzle a little oil around the edges. Cook until the bottom is golden brown and crisp. Flip and cook for another minute if desired.