- 8 cups chopped fresh or frozen rhubarb
- 4 cups chopped onion
- 2 cups white vinegar
- 2 1/3 cups packed brown sugar
- 1 teaspoon ground cinnamon
- 1 teaspoon ground allspice
- 1/2 teaspoon ground cloves
- 1 teaspoon salt
- 1/2 teaspoon pepper
- In a large saucepan or Dutch oven, combine all ingredients. Bring to a boil. Reduce heat and simmer for 1 hour or until thickened, stirring occasionally. Cool. Refrigerate in covered containers.