These are muscat grapes. They grow wild near the building where i work in fredericksburg. You can eat them yourself if lost in the woods and hungry but they’re pretty sour as grapes go. Instead, i collect them and give them to the chickens at home who seem to love them despite their sour taste.
Grape jelly, but then that’s “good fruit made bad” with all that sugar. However, Pomona Pectin does not need sugar to set. I need to get some of that pectin and check out the ingredient list.
Those look like what we called muscadine grapes.