Plum and Port Wine Jam

Instructions

1. 1

   In a saucepan, combine all the ingredients. Bring to a boil, stirring constantly.

2. 2

   Cook over high heat, stirring frequently for about 30 minutes or until it thickens. Perform the plate test (see note).

3. 3

   Pour into sterilized jars. Sterilize the filled and firmly closed jars in boiling water for 15 minutes for longer storage.