If you know the first thing about beer, you know that beer is made from grains. Grains are used for everything, whether it’s food for people or livestock. Spent grains go straight to the dump or used as animal feed, but they can also make great compost, baking ingredients, and cultivators to grow mushrooms. Brewing companies across the country are currently turning their trash into useful materials, and even ethanol at a Coors site in Colorado. Read this “sustainable blog” for an in depth explanation of the process. Cheers!
http://www.sustainableamerica.org/blog/sustainable-suds/?fb_action_ids=10202297793979593&fb_action_types=og.likes&fb_source=aggregation&fb_aggregation_id=288381481237582
Great Lakes Brewing sustainability/TBL webpage:
https://www.greatlakesbrewing.com/sustainability/triple-bottom-line