Brewing Up New Opportunities From Spent Grains

Spent grains from brewing have become the biggest success of the upcycling movement. From giants like Anheuser-Busch to startups including All Good Granola Bars and Grain4Grain, growing efforts to repurpose the byproducts of the beer-making process are cutting manufacturing wastes, monetizing compost, and tantalizing U.S. consumers who are still looking for new ways to sublimate their diets.

U.S. beer brewers annually use about six billion pounds of barley and other grains, which are soaked in wa…