The prawns aren't stirred into the batter — they're pressed whole onto the fritter right before it hits the hot oil, so they fry crisp on top.
A deep-fried lentil fritter made from split urad dal batter with onion, green chili, and curry leaves is topped with a few small whole prawns before frying, then served hot with a squeeze of lime. Carts along Colombo's Galle Face Green sell them as the sun goes down.