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Few people know what the two sides of aluminum foil are for
TheCoolist • • science
Key Points:
- Aluminum foil has one shiny side and one dull side due to the manufacturing process where two sheets are rolled together; the side touching the rollers becomes shiny, while the side against the other sheet is matte.
- According to Reynolds Wrap, for standard and heavy-duty foil, it does not matter which side touches the food as both sides perform equally in cooking and heat conduction.
- The only exception is non-stick aluminum foil, which has a coating on one side; the dull side must face the food to ensure the non-stick coating functions properly.
- Consumers should check the packaging for "non-stick" labeling to determine which side to use, while other concerns like safe use in air fryers require separate precautions.
- The common belief that the shiny side reflects heat or affects cooking speed is a myth; the difference in sides is purely a result of the foil's production process.
