While “herbal tea” is indeed a very loosely used term, botanically speaking “tea” refers to the species camellia sinensis. Hongyacha is, to my knowledge, the on

While “herbal tea” is indeed a very loosely used term, botanically speaking “tea” refers to the species camellia sinensis. Hongyacha is, to my knowledge, the only known case of a caffeine free camellia sinensis.