Cong cake is made of rice flour. Tenth-month rice is steeped for two nights and then milled. After that put it in haversack for water to run out. It depends on the kind of rice that the flour will be steeped in dilute bittern for 1 night or 2 nights to become better before using. This is the key detail to have a salient product. After that, the rice flour will be mixed with green peas, shrimp, pork mince etc. Cong cake has a low tubular shape or bloating sphere and the is fried brittlely on surface and inside is spongy. When eating it, we should use with vegetables fish sauce mixed with sweet and sour liquid and pickled stuffs.