Mix minced prawns, choy poh, pepper, sugar and corn starch.
In a 6 in. pan, pour in egg enough to thinly cover the bottom of the pan and let it cook on medium heat. Remove cooked egg wrapper from pan and let it cool. Repeat till eggs are finished.
Place an egg wrapper onto your work surface with one corner pointing towards you. Place about 2 tablespoons of cooled filling in a heap onto the bottom third of the wrapper.
Fold the bottom corner over the filling and roll firmly to the halfway point. Fold the left and right sides snugly over the roll, then continue rolling until the top corners seal the roll Repeat with remaining egg wrappers.
Heat water in the steamer to boil and steam the rolls for 20 mins. Cut and arrange on a serving plate and garnish with chives.