The French have long been wise to the pleasures of prunes but in Britain we seem to overlook them. Growing up, my mother would work wonders with Agen prunes, gently poaching them for various glorious concoctions. Cut to a French exchange in Paris when I had a prunes and armagnac ice-cream alongside a scoop of dark chocolate, from a shop on Île Saint-Louis. The flavours are still etched in my memory, and inspired this delectable pudding.