Anodizing is used to create a corrosion resistant layer. Pretty interesting process, it changes the surface of the base metal to create a much less porous and in turn corrosion resistant surface by increasing the natural oxide layer of the base metal. We utilize the process quite a bit in the aerospace industry. A lot of parts used for naval craft require this process. I know it is pretty resistant to chipping and salt corrosion. Would I feel comfortable consuming something that has basically been steeping in it? I dunno. Just my 2 cents. (not a big fan of associating consumables with aluminum when heat and time are a big contributing factor)