Goishicha

how to brew goishicha
Arthur GautierJune 21, 2026
Learn how to brew goishicha, a rare twice-fermented Japanese tea from Kochi. Discover the right water temperature, steeping time, and technique for this sour, complex tea pressed into go-stone squares.
 Small flat dark squares of goishicha double-fermented Japanese tea arranged on rice straw mats in the sun to dry, resembling the black stones of the traditional board game go.
Arthur GautierJune 19, 2026
Goishicha is one of Japan's rarest teas, double-fermented, pressed into blocks, and tied to a 400-year tradition. Learn what makes it unlike any other.