sch, i never add alot of water.. add water after u add oyster sauce, so that it can mix better n den add dark soya sauce. if u think it is thick enough, den dun add cornstarch lor. being the lazy me hor, wat i did was mix water, oyster sauce, cornstarch and sugar in a bowl. den pour into wok n then add some dark soya sauce.
skylar, me juz nw out for lunch lah..
lev, cook during wkends lor.. now i oso rarely do it after work man.. too ma fan..