Becker and Inman are trying to isolate flavorful esters (such as banana flavoring) from chemical impurities in the water from the ice planet in order to make the rations more enjoyable. Becker asks if it is possible to get chocolate but Inman says that it contains over 12,000 chemicals and hasn't been able to be replicated. All of the sudden the ship shakes as if there was an explosion. (thetvdb.com)