(麒麟麦酒株式会社, Kirin Bīru Kabushiki-gaisha ? ) ( TYO : 2503 , NASDAQ :  KNBWY ) is a Japanese company. It is a member of the Mitsubishi keiretsu . Empty bottle of Kirin beer Kirin sells two of the most popular beers in Japan, Kirin Lager--the country's oldest beer brand--and Ichiban Shibori.