The delta of the Mekong is place where you can find the best rice paper and rice cakes. Rice paper is made from a batter ofrice flour, water and salt. The paper issteamed, thendried on bamboo racks. Paper Used as wrapper for a variety of spring rolls ornoodles.The delta of the Mekong is place where you can find the best rice paper and rice cakes. Rice paper is made from a batter of rice flour, water and salt. The paper is steamed, then dried on bamboo racks. Paper Used as wrapper for a variety of spring rolls or noodles.