How To Cook For Forty Humans?

It's the year 2050, and you're the planner for a manned mission to Pluto - New New Horizons.

The mission will take 5 years round trip, and there are 40 members of the crew. What's the most efficient way to feed them all, keeping in mind safety margins and contingencies? Efficiency is measured by the amount of mass you need (less is better).

Your astronauts need at least 2,000 calories a day, and a varied diet - if you make them eat nothing but rice they will mutiny and ruin the mission. They come from various nationalities, so you should try and have food for all walks of life.

Why Pluto/Charon - Advanced analysis of New Horizon photography reveals evidence of likely artificial structures around ~2040 (think of something not obvious from any single photograph, but from a statistical computer analysis of all of them). This is also why they don't have existing bases or outposts - this is a recent push.

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How To Cook For Forty Humans?

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