I put this in the dishwasher and it turned black.  The inside looks like it was severely burnt and scratched. I will probably toss it out. Wish I would have bought stainless steel as I cannot return it because I pitched the box. Maybe I should have known that you cannot put aluminum in a dishwasher?! Other than that it worked fine for the one time that I used it. It should have come with a warning about the dishwasher.