January is a month many of us, resolutions or not, look to lighter dishes to replace the holiday indulgences of the past few weeks. But that doesn't mean we have to give up any sweet finales to our meals. This dessert soup features the sweet perfume of plums, tempered with a touch of cinnamon and lemon. Caramelizing the plums brings out their inherent sweetness and adds a robust note to the dish. Serve plain or top with a dollop of sweetened mascarpone.