Guilinggao, or tortoise jelly, is a jelly-like substance with medicinal properties that is also enjoyed as a dessert. Traditional guilinggao recipes involves boiling turtle shells for an extended period, both on its own and with various herbal ingredients, until the liquid gradually evaporates and forms a jelly-like residue.

Characterized by a smooth texture, guilinggao offers a delightful combination of sweetness and a distinct aroma. It is commonly served chilled, making it a refreshing dessert, particularly suitable for hot summers. Variations of guilinggao often feature additional toppings such as fruits, red beans, peanuts, and sweet syrup, adding layers of texture and flavor.