because as the foil goes through rollers when it is made the side that is against the rollers gets shiny and the side that's against the other foil becomes matte
The shiny side of aluminum foil is the correct side to use for cooking.
The shiny side of aluminum foil reflects heat better than the dull side.
The shiny side of aluminum foil should be facing outwards for better heat reflection.
Place the shiny side of the aluminum foil facing down when smoking pills. This side reflects heat better and can help vaporize the substance more efficiently.
The shiny side of aluminum foil should be used for cooking to avoid any potential toxicity.
The shiny side of aluminum foil is the correct side to use for cooking.
The shiny side of aluminum foil reflects heat better than the dull side.
The shiny side of aluminum foil should be facing outwards for better heat reflection.
There is no discernible heat retention difference between the shiny or the dull side of aluminum foil. The shiny side is shiny because of the way foil is made. During the last pass through the rolling mill, a double thickness of foil is run between the rollers. The side of each sheet that comes in contact with the polished steel rollers comes out shiny. The other side has a matte finish.
Place the shiny side of the aluminum foil facing down when smoking pills. This side reflects heat better and can help vaporize the substance more efficiently.
The shiny side of aluminum foil should be used for cooking to avoid any potential toxicity.
When baking cookies, it is recommended to use the shiny side of aluminum foil to help reflect heat and promote even baking.
On Reynolds aluminum company website you'll find :Which side of Reynolds Wrap® Aluminum Foil should I use, the shiny or the dull side?Actually, it makes no difference which side of the aluminum foil you useboth 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 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.
it is all the same either way.
If you are baking something wrapped in foil, you should probably have the dull side of the foil out. The dull side reflects heat a bit less than the shiny side. This means that cooking with the shiny side out would make your food cook more slowly.
The "inside" of tin foil is the dull side. The "outside" of tin foil is the shiny side.
When covering meat with aluminum foil in the oven, the shiny side of the foil should be placed facing the meat. This is because the shiny side reflects heat and can help retain moisture, while the dull side absorbs heat. However, the difference in heat reflection is minimal, so either side can technically be used without a significant impact on cooking.