Choose small oysters which would be tasty. Next, mix and blend oyster, garlic sprouts, Chinese chives and sweet potato flour, spread out the mixture onto the fryer when the oil is hot, and then have both sides of the cake well fried. For better taste, also spread egg liquid and get all ingredients well fried. Before serving, spread some pepper and put some coriander. When eating, dip into mustard and chilli sauce. Delicious.