Also known as leung fun in Cantonese, grass jelly is made from the Platostoma palustre plant, a member of the mint family. To make this dessert, the plant’s leaves and stems are boiled for about ...

yet it’s a general term for all kinds of soupy Cantonese desserts. Tong sui comes in a bowl of sweet soup with common ingredients like beans, nuts, sago, grass jelly, fruits and pudding.