Apparently, it tastes good. Astronauts on the ISS taste-tested space grown lettuce as part of an experiment to, well, grow lettuce in microgravity for long space voyages. Red romaine, to be precise.
This isn't the first time the system, which includes drip irrigation (the only kind that works in space) has been used to grow lettuce, but it's the first time NASA has let the astronauts and cosmonauts on board actually sample it.
Supposedly, it tastes like arugula. Mmm.