Xí mà is a morning snack made of pulverised sesame seeds blended with sweet potato starch and kudzu root starch (a local vine), extracted centella juice (a popular health plant in Vietnam) and sargasso juice (a brown type of seaweed) along with Traditional Chinese Medicine herbs and water. Eaten warm with a spoon, it's slightly sweet with a silky texture and a gentle, nutty sweetness. While some refer to it as black sesame soup, its texture is thicker, more pudding-like.