My one daughter who tends to be a very cautious girl, would not eat it. She felt they could be poisonous. I explained to her that cherries are cherries. Period. Eh, she still would not eat them.
We also collected a bunch of wild grape leaves to make dolmades or dolmas. I have made them before so I don't have a pic of them. I just poured boiling water over them and then removed them. Just enough to wilt them.
For the grape leaves, you want the kind that sends out tendrils so that it can climb. You also want the plant that has round type seeds, in bunches. If it has one crescent shaped seed and no tendrils- dont use it.