Kirin Nodogoshi Renewals

Kirin's Nodogoshi has been the best selling 2nd category beer since it went on sale in 2005. As can be seen in this graphic, there have been 5 product renewals since that time and each time an improvement in taste has been made.
2005 (April) - Nodogoshi goes on sale
2006 - amount of soy protein used was increased
2007 - the fermentation was optimized
2008 - the amount of hops used was optimized
2010 - the amount of all ingredients were optimized
2012 - use of cascade hops improves taste

http://www.kirin.co.jp/brands/nodogoshi/product/oi_secret.html

Photo is a web capture for explanatory purposes, copyright belongs to the company.