Plum Walnut Jam

2 1/2 To 3 lb Ripe Italian Prune Plums
1/2 c Orange juice
1 pk 1 3/4 oz powdered fruit pectin
5 c Sugar
1 c Coarsely chopped walnuts
1/2 c Raisins


Pit and coarsely chop plums; measure 6 cups. In 8 or 10 quart kettle combine plums, orange juice and pectin. Bring to a full boil, stirring constantly. Stir in sugar. Return to full boil. Boil hard 1 minute stirring constantly. Remove from heat. Skim off foam with metal spoon. Stir in walnuts and raisins. Let stand 5 minutes, stirring to prevent fruit and nuts from floating. Ladle int hot sterilized half pint jars leaving 1/4 inch headspace. Adjust lids. Process in boiling water canner 5 minutes. Makes 7 half pints