HIGH QUALITY GRASS JELLY Grass jelly, or 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.