Mars Whisky is a Japanese distiller little known in the U.S., but renowned for some very high-quality whiskies in Japan. The Iwai Whisky is a curiosity for several reasons. It’s “bourbon inspired,” as Mars says, made from a grain bill of three-quarters corn and a quarter malted barley. It’s only 40% ABV, but the high corn recipe and the fat pot still it’s made in give it substance and creaminess. The nose is a bit shy: some vanilla toasted oak notes, a touch of melon. Palate: vanilla pound cake and lychee. Short, understated finish.