Cốm Dẹp This page first published: Mar 12, 2006 · Modified: Jun 22, 2018 · by CooksInfo. Copyright © 2020 · This post may contain affiliate links · This blog generates income via ads · Cốm Dẹpn is a side dish traditonal amongst the Khmer in Cambodia, and also popular in southern Vietnam. It is made from sticky rice, shredded coconut and coconut juice. Sometimes green food colouring is added for appearance. You can buy it in some ethnic stores already make up and packaged in the chiller sections.