Former process engineer in an aluminum factory. Aluminum foil is only shiny on one side and duller on the other for process reasons, not for any “turn this part towards baking, etc” reasons.
It’s just easier to double it on itself and machine it to double thickness than it is to hit single thickness precision, especially given how much more tensile strength it gives it.
Also, our QA lab did all kinds of tests on it to settle arguments. The amount of heat reflected/absorbed between the two sides is trivially small. But if you like one side better you should wrap it that way, for sure!
This is all I found on their site about it, which aligns but isn’t as much detail as I hoped
With standard and heavy duty foil, it’s perfectly fine to place your food on either side so you can decide if you prefer to have the shiny or dull side facing out.
Okay, my buddy is gonna take foil tomorrow and run it over the profilometer (?) tomorrow and see. I’ll report back with more numbers and less hand waving when I have it
Former process engineer in an aluminum factory. Aluminum foil is only shiny on one side and duller on the other for process reasons, not for any “turn this part towards baking, etc” reasons.
It’s just easier to double it on itself and machine it to double thickness than it is to hit single thickness precision, especially given how much more tensile strength it gives it.
Also, our QA lab did all kinds of tests on it to settle arguments. The amount of heat reflected/absorbed between the two sides is trivially small. But if you like one side better you should wrap it that way, for sure!
Update: sorry to be an OP who didn’t deliver. My buddy never made the measurement. I’m hoping he will. Sorry everyone!
Reynolds wrap literally has this as a faq on their website because so many people think it.
This is all I found on their site about it, which aligns but isn’t as much detail as I hoped
Okay, my buddy is gonna take foil tomorrow and run it over the profilometer (?) tomorrow and see. I’ll report back with more numbers and less hand waving when I have it
I’ll be here to read those numbers
Matte side isn’t non stick?
Correct. Just a manufacturing decision. It looks a lot more different than it actually is.