tian cha; sweet tea; blackberry leaf tea
A sweet herbal tea made from the leaves of Rubus suavissimus, often consumed as a caffeine-free alternative. The term is used in food contexts.
Chinese blackberry; Rubus suavissimus
The plant itself, a species of blackberry native to China, whose leaves are used to make the sweet tea. Usually written in kana in botanical contexts.
Tian cha is caffeine-free and has a subtle sweetness.
Rubus suavissimus is a type of raspberry native to southern China.
From Chinese 甜茶 (tián chá), literally 'sweet tea'. The Japanese reading てんちゃ is the on'yomi of the characters.