VIDEO: Astronauts eat first space-grown lettuce

Three astronauts aboard the International Space Station on Monday were taking their first bites of space food.

With an eye towards giving astronauts on future long-haul missions the ability to grow their own meals and enjoy fresh produce in space, NASA has been working on its Veg-01 experiment, which is studying how plants grow in orbit.

The astronauts first tasted the lettuce plain before dressing it up with some olive oil and balsamic vinegar.

Before dining on the leafy vegetable, astronaut Dr. Kjell Lindgren first cleaned the lettuce with citric acid-based sanitising wipes.

Other samples will be sent back to Earth to be further analysed.