Oyster omelette, also known as o-a-chian, is a popular Taiwanese dish that combines the briny flavors of oysters with a fluffy and savory omelette. The omelette is made by frying a mixture of eggs, starch, and vegetables such as cabbage and sweet potato. Fresh oysters are then added to the mixture, creating a delightful contrast of textures and flavors. The omelette is typically served with a tangy and slightly spicy sauce made from ketchup, chili sauce, and vinegar. Oyster omelette is a delicious and satisfying meat dish that showcases the seafood bounty of Taipei.