I use one. If I'm making 5 gal batches. I burnt 2 hop socks with my other my small stainlees one. I've heard what has been said about usining aluminum. Tannins, off flavors. I was also told heat treating it in your oven at, I think 375° - 400° for a couple of hours will take care off that off flavor it would give. Plus, I can't afford a bigger stainless or copper kettle. Any thoughts?