Fools and syllabubs, two easy-to-make desserts based on fruit and cream (and, in the case of syllabub, a dash of wine or sherry) are simple sweet pleasures – but they have long histories, dating back to medieval times in Britain. Stick to modern classics such as Rhubarb Fool or get a taste of history with Regula Ysewijn's 17th-Century Syllabub.