Grass jelly, also known as leaf jelly or herb jelly, is a jelly-like dessert eaten in east and southeast asia. it is created by using the platostoma palustre plant (a member of the mint family) and has a mild, slightly bitter taste. it is served chilled, with other toppings such as fruit, or in bubble tea or other drinks. outside asia, it is sold in asian supermarkets.
Source: Wikipedia