Food & Cooking Recipes Healthy Recipes Gluten-Free Recipes Easy Prune Plum Jam 2.8 (51) 1 Review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on May 16, 2017 Print Rate It Share Share Tweet Pin Email Yield: 3 cups With a slight tang and less juice than other plums, they're great fresh or cooked down, the heat concentrating their flavor. Try these simple, fast recipes to give summer a sweet send-off. Ingredients 2 pounds halved, pitted prune plums 2 cups sugar 1 teaspoon grated lime zest 1 tablespoon fresh lime juice Salt Directions Bring plums, sugar, lime zest, lime juice, and a pinch of salt to a boil in a pot, mashing plums with a potato masher. Cook, stirring often, until mixture has the consistency of thick honey. Remove skins using a fork. Let cool. Refrigerate until ready to use (up to 1 month). Rate it Print