How to make grape juice

Pick five pounds of white concord grapes.

Pull off the stems and put them in a large pot with a couple cups of water.

Heat to boiling and moosh with a potato masher.

Simmer for 20 minutes.  Looks like pea soup. Smells delicious.

Strain through a fine colander.

Measure the liquid and return to the pot.  For each quart, add about 1/2 cup sugar.  Simmer.

Freeze in small containers.  Label it so you can remember what the heck you made last September.  Dilute 1:1 with water to serve.