Black Grape & Rhubarb Jam

Directions

1. Process grapes in batches in a food processor until pureed. Transfer to a large saucepan. Place rhubarb in food processor; process until finely chopped.
2. Add rhubarb, apple, ginger and lemon juice to grapes; cook and stir over medium heat 5 minutes. In a small bowl, whisk sugar, tapioca, cinnamon and allspice; stir into grape mixture. Bring to a boil. Reduce heat; simmer, uncovered, 30-40 minutes or until mixture is thickened, stirring occasionally. Remove from heat.
3. Carefully ladle hot mixture into four hot half-pint jars, leaving 1/4-in. headspace. Remove air bubbles and adjust headspace, if necessary, by adding hot mixture. Wipe rims. Center lids on jars; screw on bands until fingertip tight.
4. Place jars into canner with simmering water, ensuring that they are completely covered with water. Bring to a boil; process for 10 minutes. Remove jars and cool.