So I was a fool and I had left my aluminum brewpot outside full of water for the last few months (Dieting had slowed my brewing down considerably) There appears to be little spikes of corrosion lining the bottom of the pot and they arent coming off with light scrubbing. I dont want to use anything caustic, i tried a two day PBW soak to no avail. I dont want to have to buy a new one, even though they are cheap. Any ideas on how to clean this sucker?
Primary: Kitchen sink IPA, Milk stout (First AG!)
Bottled: Mild Brown, Weizenbock