We just started home brewing and are making our first batch of India pale ale right now! Brewing 5-6 gallons of this recipe produces a pound or so of spent grain - malted barley, which is barley that has been germinated, then dried (and now is wet after steeping them) I just gave a little bit of the malted barley to the chickens and they love it! I read online that big breweries give or sell their waste for cattle feed, but haven't seen anything about feeding it to chickens. Has anyone done this? I think it must be fine for them, as long as it's not rotten. I have heard that spent hops (used in brewing for flavor) can harm dogs - so I won't take any chances on feeding that part to the flock!