Combine chopped plums with syrup, sweet cherries, dried tart cherries, sugar, lime juice, allspice and salt in a saucepan with a heavy bottom; mix well. Bring to a boil over high heat. Stir in cornstarch mixture; cook, stirring constantly, until clear and thick enough to coat the back of spoon. Remove from heat and serve. Or cover and refrigerate for up to a week. Reheat in microwave oven. |