One part of the vine most people don't know is edible are the Tendrils. The Tendrils are that part of the vine that wraps around things to support and hold up the vine as it climbs. I think the Tendrils are just plain fun to eat and I use them as a snack when ever I run into them whether on the trail or in my yard. Kids love to eat Tendrils and have a ball when you show them that they ere edible. One cool thing about Tendrils is the fact that they try to wrap themselves around anything that they touch, this sometimes makes for some interesting shapes. Another reason I like the Tendrils is that they are sour in taste and I like sour. Try to get the newest most succulent ones as they get woody as they get older and stronger.
Be careful, there are many Vines that use Tendrils to climb, so not all Vines with Tendrils are Grape Vines. Some vines even have grape like fruit but are not Grapes. Some vines are toxic or even poisonous so be sure what you have is a GRAPE Vine and not something else.Have Fun!