It seems that most Americans think that saké is a novel Japanese beverage served warm that carries a bit of kick. It is usually accompanied by a California roll and a Kirin beer, and in the past has been confined to sushi bars and Japanese restaurants.That's changing. Today ultra-premium saké producers have found an American niche market ready to experiment with new foods--and the beverages that go along with it; a market that is young and enamored with Asian-fusion cuisine.In Japan, saké is con...