Is the answer simply this: http://www.northernbrewer.com/shop/brewmaster-filter-bag-214-214.html I was lucky enough to get a 10 gallon pot that I am quite excited to use. I am hoping to make the jump to all grain someday, but I don't really have the money to pull it of now. Nevertheless, I'd like to try the "brew in a bag method." I recently saw northernbrewer advertising it, here it is: http://www.northernbrewer.com/shop/biab-3-gallon-system.html. However, having the 10 gallon pot already makes it silly to buy the kit as a whole. So again, my question is what else do I need? Is it simply a mesh bag or is there other equipment necessary to brew in a bag? Thanks in advance!