It was just five weeks ago that we started our kitchen bio experiment of growing herbs hydroponically: the kitchen herbs a/k/a the kerbs. Now look:
And here’s the extraordinary thing: this photo was taken after harvesting some of them. Yesterday Kelley made a delicious split pea and ham soup flavoured with a tiny bundle of kerbs. Five weeks ago they looked like this:
I am now no longer a sceptic when it comes to growing one’s own food for a journey to Mars.
Nicola Griffith 
That is phenomenal.
Now you've got the food problem solved, what's next, experiments in anti-gravity or some other new interstellar drive? First Mars, then beyond!
jennifer, it's pretty astonishing. Every two weeks we just add some brown gloppy stuff from a squeeze packet (looks like a melted popsicle) to the water reservoir. And it turns into…food.