> Which 5 plants are you referring to?

It's a cooking joke, because vanilla is incredibly strong.

I said 5 plants because it's the fewest needed to be able to split out 80% without fractions.

Probably: rice, wheat, cassava, potato, banana?

You obviously need to eat some other stuff occasionally, but those plants are the staple diet for a large chunk of the world population.

It is old, but potato alone will get you pretty far: https://www.livescience.com/10163-man-eating-potatoes-2-mont...

I'd need some variety just so I didn't go insane.