Tesco, Finest Pedro Ximénez, Jerez, Spain

If you don't have a sweet tooth, steer clear of this rich, dark and unctuous treat, which is dripping with barley sugar, raisined fruit and figgy flavours. With a whopping 370g/litre residual sugar, you only need the smallest of glasses, served slightly chilled – or pour a little over high quality vanilla ice cream for an easy dessert.