I feed my mare beet pulp: she loves it. I let it soak for about 10 minutes before giving it to her.
Oh luvs2ride- I didn't know that you could feed beet pulp unsoaked...i was told that if it wasn't soaked, it would expand in the horse's stomach, and cause them to colic. (which is the reason for soaking in the first place I suppose)
Im not sure, but I soak my horse's anyway!