I have a propane burner I recently purchased to do my boils. It works great, however I noticed some minor scorch marks in my stainless steel brew pot afterward. I read somewhere that a copper or aluminum plate placed between the burner and the brew pot would help with this issue. Any ideas where I can find such a plate?
I was not able to find a copper or aluminum plate as other posters have suggested. However, I did find a Heat Diffuser at a local cooking supply store. It's made of iron with a ceramic cover and measures 7 inches in diameter. Its made for simmering pasta sauces, but worked fine boiling wort. The scorch marks on my brew kettle were much smaller and easily removed after boiling a stout. The draw back is the heat diffuser is meant for kitchen gas stoves, not outdoor propane burners. When I vigorously stirred the pot, it would wobble a bit, but my pot never seemed to be in danger of tipping.
I have two issues with the heat diffuser. It has small rounded touch-points on the outside, and the diameter is only 7 inches, where as my brewpot is closer to 14.