Canning grape juice from fresh grape juice. This is not a concentrate. This is actually fresh squeezed grapes that have been juiced. But this is just the beginning. Now we get to make juice that we can so we have it for the winter. I simply took about 6 quarts, got it up to about 160 degrees and added a cup of honey. You want to taste test your juice so you know how much to sweeten. Don’t let the juice boil. Once the honey or sugar is added, then you can place juice in jars. You want a 1/4” head