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xkcd #3187: High Altitude Cooking Instructions
(imgs.xkcd.com)
xkcd #3187: High Altitude Cooking Instructions
Title text:
1,300,000-1,400,000 ft: Ask a crew member to show you how to use the ISS food warmer.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3187/
I'm not sure if it's still the case but most of the population in Mexico is above 3000 feet so recipes had variations for sea level instead (the recipe was made for 1000msnm)
Sometimes it was confusing if you got something imported from the US or some brand that needed to be adjusted for high altitude