Fried oysters, also called oyster omelet, are found in ordinary Chaoshan restaurants in Shenzhen. There are many ways to make it, which can't guarantee whether it tastes like the last time. Some people use eggs and some people use that powder. Personally, it's all right. There's a Taiwan Province restaurant in the East Gate that cooks oyster omelet well, and the weight is unlikely to be as enjoyable as what you ate at the seaside.