A new advance in ales, E.S. Chi Tonic Herbal Ale has a satisfying, lively taste. Brewed with a proprietary blend of wild Chinese herbs prepared by Master Herbalist Yen-Wei Choong, Lic. Acupuncturist. Dr. Choong is the director of Yellow Emperor Natural Healing Center and Zen Garden: Chinese Healing Herbs, in San Anselmo, CA. 5.0% alcohol by volume.