Kaiyo Cask Strength Mizunara Oak WhiskyKaiyo, which translates to Ocean, is a fascinating endeavor in aging. After an initial, land based stint aging, this whiskey spends three months ocean aging before being returned to port in Japan and aged further before bottling. Kaiyo is aged in Mizunara Oak, a rare and expensive Japanese variety of very porous oak. Because the trees grow crooked, they need to be around 200 years old before they will make a barrel. Japanese whiskies are almost never