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[–] 20 points 1 year ago (2 children)

Aluminum foil that's food grade will have coatings on it to assist with food release. I assume that's part of why one side is more shiny than the other.

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  • [–] 15 points 1 year ago* (last edited 1 year ago)

    I have always understood the rough side to simply be an outcome of the rolling process.

    If I'm wrong I'd love to know!

    edit: I looked it up, yeah that's the reason one side is shinier... the rolling process, nothing else

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