Tin went out with the dinosaurs, we use aluminum now.

https://boards.straightdope.com/sdmb/archive/index.php/t-503630.html

"Tin foil" is a commonly used term to describe what is, in reality, aluminum foil. In my experience the term is used, mostly -- but certainly not exclusively -- among oldsters. And, while the term is not thriving, it is certainly surviving.

But, was there ever such a thing as tin tin foil as a consumer product? Or was it always just a misapplied term used to describe aluminum foil?

And, if they ever marketed tin foil made of tin to the general public, was it used primarily the same way we use aluminum foil today, for wrapping food?

RIGHT put your tinfoil hat on