We were faster than the starlings this year and harvested 2 buckets of dark blue grapes from the vine on the front of our house yesterday. Those were then washed and picked off the stalks, juiced, filtered, and preserved as a rich fruit juice or light cordial in sterilized bottles.
4.5 litres in total, that’s not too bad for a north-facing wall in London, I should think. And it has quite a nice flavour, too.