packet, the side facing the food generally doesn’t make a meaningful difference.
The foil will still do its job.
It will still cover the food.
It will still help protect it.
It will still conduct heat.
Your dinner isn’t sitting there thinking:
“Thank goodness they remembered to put the correct side toward me.”
But What About Heat Reflection?
This is where things get interesting.
The shiny surface does reflect more radiant heat than a duller surface.
So the basic idea isn’t completely wrong.
Shiny surfaces can reflec
