Hmmm. A solar espresso machine, with the sun heating the brew water and also a boiler to drive both the steam wand and the steam engine that runs the espresso p

Hmmm. A solar espresso machine, with the sun heating the brew water and also a boiler to drive both the steam wand and the steam engine that runs the espresso pump! (I'm mostly looking for an excuse here to stay in bed on bad weather days...)