https://www.youtube.com/watch?v=MCNVh1pHzNcessentially its unfiltered coffee, grinded very fine. I never tried it myself but seems to be a lightweight, good alternative and can be brewed in anything - no fancy equipment really needed. But you could buy a CEZVE...
( pictured).
I never tried, I dont know if I could enjoy gritty, unfiltered coffee made by oppressors of jews. LOL!