Finely slice the roast pork. Rinse the bean sprouts in boiling water and drain. Wash the watercress, and shake dry.
To make one omelette, crack 2 eggs into a small bowl, and lightly beat in 1 tbsp rice wine, salt, pepper and ½ tsp sesame oil.
Heat 1 tbsp vegetable oil in a hot wok over high heat, swirling it around to coat the entire surface. Pour in the beaten eggs and quickly