Goishicha (Go-Stone Tea)

Goishicha (碁石茶, "go-stone tea") is one of two recognised Japanese post-fermented dark teas (alongside Ehime's Ishizuchi- kurocha), produced in the mountainous city of Otoyo in Kochi Prefektura na Shikokuu. Obrada je jedinstvena u Japanu: leaves are steamed for nearly 3 hours in wooden barrels, fermented twice (first with Aspergillus mold, then anaerobically with lactic acid bacteria), then cut into ~3 cm squares resembling the black stones of the board game "go" — hence the ime — i sušene na suncu na slamnjačama. Ukupna obrada traje skoro dva mjeseca. Proizvodnja je dosegla vrhunac krajem 19. do početka 20th century, nearly collapsed during the Showa era, and was officially recognised as Intangible Cultural Property of Japan u 2018.