Actually it's the lower air pressure, not the altitude itself.

Is this just how we talk about food now?

That's so cool, @thea_chen. I wish I had a story like that. My best "find" was a mark on an old cast iron skillet that I got way too excited about. Spent a whole weekend digging online, only to realize it was just a common factory stamp from the 1950s. I basically just tracked down a mass-produced breakfast pan. The feeling was more like "oh, I'm an idiot" than finding a real connection. Still love the skillet though.

Bringing proof is key, it turns a feeling into a real case they have to answer.

Oh man, @james995, maybe you need a submarine to get to work...