Use a frying pan and place enough oil you need to fry and heat it accordingly.  Please wait until it's warm enough. Make a batter with gram flour(Besan) and water in a very fine consistency. And now dip the tomatoes one by one into the batter.  And put them into the heated oil on the pan and fry for up to 2min until they become golden brown. After the process, serves the fried tomatoes with sauce and has a lovely delight.