A Koicha grade Matcha powder has mild but deep, full flavor and strong umami (savory) taste. Koicha – thick matcha is almost like melted chocolate. Koicha is the essence of a Matcha Tea Ceremony.
Isshin has some types of fresh stone grind matcha powder. All are of the same grade but have different flavors. Isshin will deliver a newly grind one from time to time.