Remove heads, skin and devein prawns, leaving the tail intact.
Marinade prawns with salt and pepper for 30 minutes.
Heat cooking oil in a wok. Dip prawns in egg and dust with shifted flour and corn flour.
Deep-fry prawns in hot oil for 3-4 minutes till golden.
Drain on paper towel and set aside for later use.
Melt butter in a wok. Add mashed salted yolks into hot butter. Stir-fry for a couple of seconds.
Add curry leaves, sliced chilies, sugar and Nestum cereal.
Quickly stir-fry for 2 minutes, till cereal changes color, feels light and crunchy.
Toss in fried prawn. Mix well and remove from heat. Serve hot.