Should You Use the Shiny or Dull Side of Foil?

I recently saw a viral Reel claiming that the shiny side of foil is for hot food and the matte side is for cold food. Had I been using foil the wrong way all these years? Here's what the experts say.

Should You Use the Shiny or Dull Side of Foil?
I recently saw a viral Reel claiming that the shiny side of foil is for hot food and the matte side is for cold food. Had I been using foil the wrong way all these years? Here's what the experts say.