Fill a pan with water to cover the aluminum servers, add 1tablespoon cream of tartar or 1 tablespoon lemon juice per quart ofwater, and simmer until the discoloration is gone.
If you want the cleanest brightest aluminium pan in Christendom ,just cook some rhubarb in it.
Try "Mother's" Mag Wheel Polish.
You can get it from the automotive supply store. But I don't know ifit is food safe.
Helen Driggs, Managing EditorLapidary Journal300 Chesterfield Parkway, Suite 100Malvern, Pa.19355www.lapidaryjournal.com