2 pounds halved, pitted prune plums
2 cups sugar
1 teaspoon grated lime zest
1 tablespoon fresh lime juice
1. In a saucepan bring plums, sugar, lime zest, lime juice, and a pinch of salt to a boil, mashing plums with a potato masher.
2. Cook, stirring often, until mixture has the consistency of thick honey.
3. Remove skins using a fork. Let cool.
4. Refrigerate until ready to use (up to 1 month).