Devein the tiger prawns. Remove the whiskers, swimmers, legs and pointed tips of the tail and head. Rinse them clean.
Marinate the prawns with 1/2 tbsp of salt in two parts and rub to ensure they are spread evenly.
Heat the cooking oil in a wok over medium heat for 6-8 minutes.
Transfer the prawns into a mixing bowl. Crack an egg over them, rubbing to coat them evenly with the egg.
Sprinkle the crispy flour in 3 parts, mixing them and coating them evenly in between each part so the egg is soaked up.
Test the cooking oil by dipping wooden cooking chopsticks. If bubbles form at the tips, the oil is ready for deep frying.
Fry the prawns for about 2.5 minutes or until crispy and golden brown. Remove with a strainer and set aside on a cooling rack to drip off excess oil. Repeat for the rest of the prawns.
In a non-stick pan, add 15 ml of cooking oil over medium heat. Stir fry the garlic for 45 seconds, until fragrant.
Add the chilli and strip the curry leaves from the stems. Fry until well-combined and fragrant.
Add the butter and stir until it is fully melted.
Add sugar and evaporated creamer. Mix until they are all well combined.
Pour in 45g, or half, of the instant cereal into the mixture, and stir until just combined.
Toss in the prawns to coat them with the cereal mixture. Once well-combined, add the rest of the instant cereal. Continue stir-frying for another 20 seconds. Switch off the heat.
Plate and serve the prawns immediately.