Survey says #1 answer is Compost. But really the sky is the limit in organic tea making. If you look around a bit there is quite a few recipes posted in this section. I am a noob myself about to brew up my first batch this week end. Got the 55 gallon barrels ready to go. Lucked out a place just down the road has food grade 55 gallon barrels for 15 bucks a piece. Mine reak to high heaven of Dr Pepper since that is what was in them. Sure it will be gone after the first brew or two. Most brew in 5 gallons But i have a vegetable garden that needs to be fed also. Speaking of which i got to go check on my bell peppers something was feasting on them last night. I saw a small spider moved in i hope he eats what ever the hells chewing up my peppers. Peace