I may have picked some of the grapes early (see the green ones?), but I was in a race against the wildlife. Besides, it's nothing a little sugar can't handle.
I followed my grandmother's recipe, boiling the grapes without water (see below), straining them, and boiling the juice with sugar. The recipe is in Grow It. Eat It.
I defied the canning gods by pouring the jelly into clean jars...and not processing. The jelly sits safely in the refrigerator. Well, not so safely since we've eaten half of it already. Since it's not "canned," we'll have to eat it soon. Not a problem. Delicious!