On 20 Oct 2003 16:29:08 -0400, Don Saklad >
wrote:

>Would there be any advantage using aluminum foil in the oven on pans by
>placing the foil dull side up?...
>
>So far with respect to the question, resources explaining this do not give
>technical reasons for their explanations.

From the Reynolds Wrap website (www.reynoldskitchens.com):

Which side of Reynolds Wrap® should I use, the shiny or the dull side?

Actually, it makes no difference which side of the Reynolds Wrap®
Aluminum Foil you use — both sides do the same fine job of cooking,
freezing and storing food. The difference in appearance between dull and
shiny is due to the foil manufacturing process. In the final rolling
step, two layers of aluminum foil are passed through the rolling mill at
the same time. The side coming in contact with the mill's highly
polished steel rollers becomes shiny. The other side, not coming in
contact with the heavy rollers, comes out with a dull or matte finish.