[header] How to prepare idli batter [title] Rinse the idli rice 3 or 4 times in cold water. [step] Measure 4 cups (700 g) of idli rice into a large bowl and fill it with cold water. Use a spoon or your hand to swish the rice around. 
Drain the water out and pour clean water into the bowl. Continue to swish and drain the water until it's clear.