Originally Posted by Andy M.
I line my aluminum cookie/baking sheets ( half and quarter sheet pans) with foil or parchment for most uses. I always wash them afterwards. As a result, my pans don't set off any alarms and last forever.
Yeah.... I mean why wouldn't you wash them? Just because I usually line them doesn't guarantee that they will remain pristine. I line them foil, parchment, or silicone baking sheets, depending on what I cooking, but I always wash them afterward. I love my nice heavy aluminum half sheet pans, and when we move to the Bahamas next year, it will be expensive to order replacements for any cookware, so proper care is essential.