It's 'grape season' at the moment and I'm busy chomping my way through the hundred bunches on the vine in the greenhouse. I thought I'd try grape juice the other day so here's one version.
Take the grapes off the bunch and place in a container (not a bucket). There's no need to take off your shoes as a masher will squash the grapes quite adequately.
The resulting mush can then be strained through a sieve and the resulting juice -
It's a bit cloudy as I only filtered once and probably pushed some of the mush through the sieve but the resulting juice tasted just fine. I exercised my arm muscles too!