The bubbling instant bread that Rey makes from her Jakku rations in Star Wars: The Force Awakens was real, people! Or at least, it wasn't CGI! Even though the bread probably falls somewhere below "Did Maz Kanata actually ever f*ck Chewbacca" on the list of things you talked about after The Force Awakens, it was one of the coolest special effects in the whole movie. Finding out that it was a practical effect (something director J.J. Abrams prioritized in the film) is just icing on the just-add-water cake. As a reminder, this is what the trick looks like:

Sources: Independent