Put the flour in a large bowl and stir in enough water to make a smooth batter.
It should have a thin pouring consistency.
Add the tomato, chilies, cumin seeds, and chopped coriander.
Season with salt and beat lightly with a fork for 1 minute.
Heat 1 tablespoon oil in a non-stick frying pan (skillet).
When hot, pour in a ladleful of the batter and tilt the pan slightly to spread it over the base into a circular pancake.
Fry for about 2 minutes, or until brown on one side, then turn the pancake over, adding more oil if required and fry for a further 2 minutes, or until brown.
Remove from the pan and keep warm in a low oven.
Make the others in the same way, adding more oil as needed.