They brought you freeze-dried beverages, irradiated meat, rehydratable and thermostabilized foods, and now, NASA has developed the technique to grow food in space.
Say what?
Yes, that’s right. Astronaut Don Pettit journals the events of a zucchini plant —in the POV of the zucchini plant — growing in space.
Now that scientists have some proof that life can be sustainable (somewhat) in space, studies are now being performed for space farming and vertical garden designs for optimal space.
Growing food in space will help solve the issue of packaging food for the entire duration of the trip and instead allow astronauts to grow food for themselves, which, presumably would mean less weight at point of departure (from Earth) and less cost than it would be with storing what I would think to be about a ton of food and beverages.
Planting and harvesting your own food in space is one amazing feat—but it also adds another level to the human psyche: maintains sanity. Gardening means more relaxed and calm astronauts. Howard Levine, Project Scientist at NASA’s International Space Station and Spacecraft Processing Directorate thinks so too:
It can be pretty harsh out there, confined to a small metal box. Caring for a plant every day provides vital psychological relief, giving astronauts a small remembrance of Earth.
And parallel to what almost everything in life teaches you: patience is everything. 
