Ever heard of such thing called "Beer and Milk"?
The idea for the drink was conceived after dairy firms threw out a huge amount of surplus milk in March last year. The son of the manager of a liquor store in Nakashibetsu, whose main industry is dairy farming, suggested the idea of producing the milk beer to local brewery Abashiri Beer.
http://mdn.mainichi-msn.co.jp/national/news/20070131p2a00m0na026000c.html - via Japan Probe
http://japansugoi.com/wordpress/hokkaidos-abashiri-brewery-has-colorful-beers/