Wash the chopped brinjal well, sprinkle some salt and place in a colander.
Mix the rest of the ingredients except the oil in a bowl. Add the drained brinjal and toss well. Add water in drizzles and mix to make a thick batter.
Heat oil in a kadai till hot enough. Drop spoonfuls into the hot oil and fry till golden brown.
Drain onto a kitchen towel. Serve warm with ketchup.