1.Combine mussels and the water in wok; cook, covered, about 5 minutes or until mussels open (discard any that do not). Remove mussels from wok; reserve ½ cup cooking liquid.
2.Heat peanut oil in wok; stir-fry capsicum, shallot, chilli, garlic, buk choy and ginger until capsicum is tender. Add cooking wine; simmer, uncovered, until liquid reduces by half. Add reserved cooking liquid, sauces, sesame oil and sugar; stir-fry 1 minute. Return mussels to wok; stir-fry until hot. Sprinkle with coriander to serve.