Why is only 1 side of aluminum foil shiny?

Why is only 1 side of aluminum foil shiny?

Is there a purpose behind the two different textures? Should we be using different sides for certain reasons?.
Is there a purpose behind the two different textures? Should we be using different sides for certain reasons? .
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Lynette Muller - Tin Foil Fact Let's Learn (Kaalvoet

Why Aluminum Foil Has a Dull Side and a Shiny Side - Reynolds Aluminum Foil Wrap

How Aluminum Foil Can Boost Your Wi-Fi Signal

People have just learnt they've been using tin foil wrong their entire lives - and their minds are blown

This Is Why Aluminum Foil Is Shiny On One Side And Dull On The Other - I'm A Useless Info Junkie

Is the aluminium foil usable in this condition? - Seasoned Advice

The History of Aluminum Foil Packaging - KitchenDance

Aluminum Foil: Do you cook with the shiny side in or out?

Does Putting Aluminum Foil In Your Dishwasher Work?

What's The Difference Between The Shiny And Dull Side Of Aluminum Foil?

Should I Really Put Aluminum Foil in the Dishwasher?

People have just learnt they've been using tin foil wrong their entire lives - and their minds are blown