The experts at Reynolds weigh in.

Simply Recipes / Kalisa Marie Martin

My kitchen is never without aluminum foil.

It also claims that the dull side of foil is non-stick.

filet of salmon on a sheet of foil

Simply Recipes / Kalisa Marie Martin

Have I been using foil wrong all these years?

Here’s what I found out from the experts.

Why Does Foil Have a Shiny Side and a Dull Side?

Vegetables on a foil packet

Simply Recipes / Sally Vargas

The two layers are then separated for packaging and distribution.

The side that was in contact with the polished steel rollers is shiny.

The other side, where the two layers of foil touch each other, comes out dull.

Garlic Butter Roasted Salmon topped with herbs and set on foil.

Simply Recipes / Kalisa Martin

Essentially, one side got buffed more and became shiny.

Simply Recipes / Sally Vargas

Which Side Is Best To Use?

Both claim that the difference between the sides is purely a result of how foil is manufactured.

However, neither explainswhyit doesn’t make a difference.

And this determines which side should be used.

That’s why it doesn’t matter which side you use.

This is true whether the food is hot or cold.

You have to grease it with cooking spray, butter, or oil to get a non-stick surface.

it’s possible for you to buy non-stick foil that has one side sprayed with a food-safe non-stick coating.

The Takeaway

Foil has a shiny side and a dull side because of how it is manufactured.