Originally Posted by Gameface
Let's say "hypothetically" that I have a large pile of spent grains on my property rotting away in the sun. What would I need to add to it or do to it so that it becomes good compost?
Well, the easy answer would be " google compost pile". But, the longer answer is: a compost pile is kind of like a layer cake. You layer plant material like leaves and garden waste, with animal manure(if you have it), and vegetable waste like peelings. Add a little garden soil(or old compost) to provide the active components. Often a little Lime is beneficial. And sometimes I add alittle plant food (fertilizer) to kickstart it. Beneficial bacteria and molds break down the waste. Worms and other invertebrates help by oxygenating as well as eating some of the raw materials. My pile tends to be mostly composed of coffee grounds and spent grains, along with whatever vegetable wastes we generate. In the Fall, there's lots of garden waste.
So, after the book, now to answer your Q: Take that pile of probably stinky grains, mix in some leaves or other coarse garden waste, sprinkle with a little lime, make sure it stays moist, and turn it over every week or two with a garden fork or shovel. If you find any worms, throw those in the pile. If you turn it (helps oxygenation) it will be useable compost in a month or maybe 6 weeks. Hmmmm, kind of sounds like making beer........