03 Agrain Spent Grain Flour - Stout is the most complex of the Agrain flour assortment, with both barley, wheat, rye and oats. The taste is deep and intense, and the color is dark. The malt that is used for brewing stout beer, has been roasted hard and notes of coffee, chocolate and even licorice can be found in the spent grains. We have mixed a super delicious stout flour, that gives character and color. Agrain® 03 Spent grain flour is perfect for ryebread and everything with chocolate.