So a while back I was reading a book about climbing Mount Everest and some guy mentioned how he just needed some Sherpa tea. I love tea so I had to see what that was about.
It's called butter tea, po cha. It's a tea that is steeped for a long time then churned with yak butter and salt (and has some regional and seasonal differences- yak milk when butter can't be afforded, saltier in winter...)
Your heart would probably explode if you had it every day, but I can see a thermos of this stuff being good for one of those really cold and windy days. I just need to find some yak butter.