Heat oil in a pan and beat egg whites along with seasoning and prepare two thin omelettes.
Cool and cut into juliennes (long strips).
Heat oil in a wok. Add onions and mushrooms and cook till onions brown and turn soft.
Add shelled prawns and cook for two minutes. Introduce cooked rice and stir.
Stir in sugar and soya sauce.
Serve the dish on an individual platter garnished with juliennes of omelette and coriander leaves.