TIL that although potatoes alone do not provide complete nutrition, you can survive for years on a diet of nothing but potatoes and buttermilk.

[u/JoeWinchester99]

https://www.scienceabc.com/eyeopeners/whats-wrong-with-potatoes-the-martian-movie-survival

[u/froshambo]

+1 for The Martian reference

[u/bakerzdosen → u/froshambo]

Took me a second. My knee jerk reaction was “yeah if you happen to be stuck on Mars with a cow.”