Dunggulae (둥글레) is a plant known as Solomon's Seal (Polygonati rizomi). The root is roasted and used for making a tea, available in boxes of 20 or 25 bags, or in bulk. The bags are much blander and less flavorful.

Other Korean names are Okjuk, Hwangjeong, and Gaebulgot. Dunggulae-cha is also used by direct application in the treatment of hemorrhoids [1]. It's also said to prevent aging and help with constipation.