rooibos; redbush
Refers to the South African herbal tea made from Aspalathus linearis, commonly consumed as a caffeine-free alternative.
Lately, I've been drinking rooibos tea often.
ルイボスはカフェインが含まれていないので、夜でも安心です。
Rooibos is caffeine-free, so it's safe even at night.