Some people into #retrocomputing want an Apple I or a Commodore 65, I'm a simpler man, this is my holy grail...

You can read the full article (in Italian) here, it's DIY instructions and a BASIC program for it.

I believe all it is is a switched 220V outlet.

https://archive.org/details/MC_microcomputer-042/page/n93/mode/2up

The 1-cup espresso maker they're using is a Velox brand extremely 1970s looking device.