So do you use a false bottom in the brew pot? I once made the mistake of putting heat on the kettle with the grain bag in it and it started to scorch it (luckily I was there to catch it). So generally, I will take my steeping water up to just over 160, drop the grain bag and turn the heat off. Over the course of a 30 minute steep, the temp will drop to about 150. This seems to add good color and flavor to my beers, but am I missing out on extraction?