Which grape vine?

Many decades ago we planted outdoor grapes. Most of them continued to fruit really well but they were for wine and not eating. Then one stopped and we replaced it with one ...ready...from Lidl. This has been been a very productive vine. We never water the vines and never feed them. They do give us enough grapes for making wine.

 

The old tale was that you planted a grapevine above the dead body of an animal.