Recipe Crispy Fried Oyster Omelette with Spicy Sweet Sour Chili Sauce. Oyster omelette is a popular Chinese cuisine dish in Taiwan, Hong Kong, Singapore, Malaysia, Indonesia and many parts of Asia for its savory taste. There are several variations of the oyster omelette; differ from the ingredients, the method of making and also the condiments to served compare to the originally Taiwanese version. Oyster Omelette is often sold in night markets and considered as a populer street food.