I cooked some ribs and used a baking sheet under my rack.
Later I cleaned the greasy bits by soaking the baking sheet and rack in a baking soda solution until the water was gone. Then I added vinegar and scrubbed it. The rack is stainless steel and is doing great.
The sheet seems to be aluminum and has visible baking soda stains on it(even minimal powdering). I added more vinegar and scrubbed it but it persists.
Is there a way to clean the baking soda stains?