Rock Sake Cloud is "nigori" sake, which means "cloudy" in Japanese. This specially designated sake is roughly filtered, thus opaque in appearance, and has a slightly sweeter flavor. Before sake filtration techniques were modernized, all sake were nigori, so this sit the most traditional form of sake. Rock Sake Cloud is also Junmai Ginjyo quality -the rice used is polished down to 60% of its original size, and there is no distilled alcohol added during the brewing process. Rock Sake Cloud is a rare, ultra-premium nigori sake handcrafted for purity and enjoyment.