The usual time to cook prawns is similar to cooking fish and both kinds of seafood cook in a short time. The time taken to cook prawns perfectly with a juicy texture and not hard and chewy is just 8-10 minutes. Stir-frying them each side for few minutes by tossing them well on both sides while cooking gives us perfectly cooked prawns. Overcooking makes the prawns chewy and another point to note is to clean them well before cooking and removing all their impure parts.