> Weird how every espresso machine in existence has a boiler in it huh. "Boiler": > A boiler is a closed vessel in which fluid (generally water) is heated. *

> Weird how every espresso machine in existence has a boiler in it huh. "Boiler": > A boiler is a closed vessel in which fluid (generally water) is heated. * https://en.wikipedia.org/wiki/Boiler https://en.wikipedia.org/wiki/Boiler Heated not necessarily to 100˚C. Just a raising the temperature. It's also why there are temperature-controlled kettles (in addition to 'simple' ones that are just on/off): * https://www.youtube.com/watch?v=Pbel051H7-s https://www.youtube.com/watch?v=Pbel051H7-s