Rice wine is a beverage fermented from grain. Some well known rice wines include Sake, Mirin and Shaoxing wine. Both Shaoxing and Sake are served as beverages, Mirin is typically used in sauces as well as a flavoring for rice.
Sake is very easy to find in the U.S. Mirin and Shaoxing can be found in the Asian section of some well-stocked grocery stores or in most any specialty Asian grocery store. All of these products an now be found online at Amazon.com