An oddly named whisky from an oddly named company, Rainbow Whisky is produced by a ji-whisky maker, named Ai Unibio, located in Mikawa, not far from Tokyo. The company is the result of a merger between a few local companies that mostly produce traditional Japanese-style drinks, like sake and shochu. Rainbow Whisky has been on the market for a few decades and is a favorite among many locals. We think it’s well worth a try.