- Use fresh sweetcorn, then boil in water for 4 to 5 mins. Drain the corn completely. Add salt and pepper and mix well. Add in all the flour and toss gently. Place it into a fine mesh sieve and shake so the excess flour is gone. Heat oil for deep frying till super hot. Drop the corn into the oil. Fry till super crispy and golden. Around 3 to 4 mins. Drain it in a sieve. Now add in seasoning, lemon juice, onion, coriander leaves and mix well. Serve immediately.