Originally Posted by Scut_Monkey
I don't care about the appearance of them. That dosen't bother me. I simply worry that the black oxidized aluminum will impart flavors.
My friend, you appear to be lacking real issues to worry about.
You WANT the aluminum to oxidize to form a protective layer. Ever heard of anodizing? Aluminum, and other metals, are anodized to create a thick, hard layer of oxide for protection from further oxidation and appearance purposes.
The oxide layer will not come off unless you scrub it vigorously and/or use an acid cleaner.