Combine the flours, oil, onions, chilli powder and coriander together in a bowl.
Season with salt.
Mix in 1 teaspoon water to make a stiff batter.
Heat enough oil for deep-frying in a kadai or deep, frying pan (skillet) to 180 degree C / 350 degree F, or until a cube of bread browns in 30 seconds.
Then reduce the heat slightly.
Working in batches, drop spoonfuls of the batter into the hot oil.
Deep-fry, turning frequently for 2-3 minutes, or until golden and crisp.
Remove the pakoras with a slotted spoon.
Drain on kitchen paper (paper towels).