Guilinggao, which literally means turtle essence jelly, is a Chinese dessert that looks similar to jelly or curd and is black in color. Homemade guilinggao is made with ground striped box turtle shell and some herbs are added such as sarsaparilla. You have all the information in: «Dishes, desserts and other typical foods in Chinese gastronomy«.
You have all the information in: "Dishes, desserts and other typical foods in Chinese gastronomy".