grass jelly
A jelly-like Asian dessert made from the leaves of the mesona plant. Often served in sweet soups, bubble tea, or with fruit.
I ate grass jelly at a Taiwanese dessert shop.
Grass jelly goes well with bubble milk tea.
From Chinese 仙草 (xiān cǎo, 'immortal grass') + ゼリー (jelly). The plant Mesona chinensis is used to make the jelly.