To make your own grapejuice~~ Place 2 handsfull of CONCORD grapes into a clean quart canning jar.( Don't use other grapes. The taste is not as rich- unless you're making wine.In that case-OK. ) Then add 1/4 cup sugar to each jar then add boiling water to the neck of the jar leaving 1/2 " space. Seal & can according to the Ball handbook for canning.Here's what I do- I always use my pressure canner- As soon as the pounds hit 5#, I shut off the stove & let it come down naturally.It works out just right.Give it 3 mos to set then it's good juice.Enjoy!