They do sound good elin, I would love to try one, maybe I will look for recipes, :)
Yes haslamhulme, I got a good deal by buying a lot at one time, saved on postage too. Nero del Portogallo and Sultane, I found a bit of info on this forum. Della Signora is italian. The others may be too but waiting for info from jurassic plants. They are growing and propagating them in Wales, so I thought that I might have a chance. It is surprising what does flourish here. Many plants will survive if planted in the right spot and are protected from too much moisture.
I think that my polytunnel is going to help. I also have a little greenhouse, nearer to my house, that has a heater to provide frost protection. It is also near a stone built shed that seems to offer protection and, I suspect, acts somewhat as a heatsink. Even without heat it stays a few degrees warmer than the polytunnel. Whilst the plants are smaller, they will overwinter in the greenhouse. Once I can propagate them and get duplicates, I will experiment, leaving some in the tunnel, standbys in the greenhouse and some in the ground in sheltered locations.
That is the plan but as we know, the best-laid schemes o' mice an' men gang aft agley...