You gotta love ingeniuty.
Who knew people from MIT were so smart? 
( Drew’s response in 3, 2, 1 …)
Now if they could only find a way to harness the gases the finished product produces 
Actually, I’ll pass this off to my Beaver Brother - Gordon.
Oh, alright.
This guy
That’s right - that guy. 
Not much use to the cows and pigs then. I think the “circle of life” where the spent grain goes to the feed lot and meat comes back to the brewery has some merit.
Food is fuel, one way or the other.
I used to grow gourmet mushrooms. The spent grain could well be used
for a mushroom growth substraight IF it can be cooled to spawning temps
and kept from contamination. Once mycelium colonizes the biomass, they
could be easily induced to produce fruit bodies.
After that however, you are left with material prolly only suited for the compost
pile or that MIT guy’s digester.