Several years ago I found a vine on the edge of some nearby woodland; I imagine it was the remnant of some ancient, long-lost, vineyard.
The vine itself was totally disease free, and its white grapes were delicious even though they were filled with pips. The leaves were much thicker and bigger than 'ordinary' vines, so I took some cuttings, and the results, above, now grow on the perimeter wall of the pool.
The flavour of the grapes is very unusual. I remember a neighbour giving me some many years ago, whilst we were wine-making, and explaining to me that they were a banned variety. I've never forgotten the taste, and these ones are the same as his. His vineyard is now long-gone too, and I imagine that the grape variety is in danger of disappearing.
The grapes have a taste of Ether, and their inclusion in with other wine-making varieties was halted quite a long time ago. Unfortunately I am unable to find the name of the variety; it seems to have been deleted from history.
I take a few cutting every year, and give them to whoever wants them. They grow like crazy, and are amazingly productive! If you want a plant; pop round!