From The Redwall Kitchen (http://redwall.net/kitchen)
Damson Jam
-36 prune damsons
-1 orange, quartered and seeded
-sugar
Pit damsons do not peel. Put damsons and orange through medium blade of meat grinder. Measure pulp into a large pot add equal amount of sugar. Cook over low heat stirring until sugar is dissolved bring to boil boil. Stirring occasionally for 10 minutes or until jelly stage. Pour into hot sterilized jar seal immediately.
This recipe donated by Maxell the Warrior.