I burnt the bejeezus out of my LME and now have a nice black layer of carbon tightly adhered to the bottom of my aluminum brewpot. What's the easiest way to clean it?
This is from my grocery and produce experiment from a few months back....
I found that for even the most stubborn scorch marks, that an extremely fine 3m wet/dry sanding sponge took off the burn without scratching the aluminum....
Scrub off as much as you can with a scrub pad then fill the pot with a couple inches of water. Add 1/4 to a half cup of baking soda to the pot and bring it to a boil. Once it gets to a good boil, take it off the heat and let it set for an hour and add a cup of vinegar and bring that to a boil as well and remove it from the heat and cool. It should scrub right off.