Instructions: Remove and discard pits from plums (do not peel). Chop plums into 1/2" pieces. Combine chopped plums, orange rind and orange juice in a large Dutch oven. Stir in powdered fruit pectin. Bring mixture to a rolling boil, stirring constantly. Stir in sugar. Return to a rolling boil; boil 1 minute, stirring constantly. Remove from heat; skim off foam. Stir 5 minutes. Stir in walnuts.

Quickly spoon hot mixture into hot sterilized jars, leaving 1/4" headspace.

Remove air bubbles; wipe jar rims. Cover at once with metal lids, and screw on bands. Process in boiling-water bath for 15 minutes.

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