So in trying to get rid of the last of my stock of extract, I am brewing several batches that have a TON of specialty grains that I mash in a pot without putting them in a grain bag because there is just way to much. To sparge, I usually put them in a strainer and use the sprayer from the kitchen sink to spray hot water over them. It usually works really well, but I just tried to make a Chocolate Granola Bar Stout. I used half a pound each of flaked barley and flaked oats. This caused some serious issue with the sparge method, and I may have aerated the wort and there was still a lot of residual grain in the wort at boiling.
I have a Java Stout that I was going to do, and it uses a lot of flaked grains as well, and I foresee this problem happening again. Is there a better way to sparge 8-ish pounds of specialty grains?