So. This is a process. First you go pick a big bowl of grapes which isn’t very many, because you seem to have enough grapes to sink a submarine. You pick and clean and sort through your big bowl of grapes. Wash them really well.
Then you set up this huge steam juicer. And you dump your giant pile of grapes into the top of the steam juicer. Then you wait and wait and wait a little more and finally some juice starts to come out.
Before you know it, you have a pile of jars. Jars of juice.
And then you start all over again. Because you know, you have enough grapes to sink a submarine.