1 (20 oz.) can crushed pineapple in heavy syrup
1 c. sugar
1 c. water
1 c. vinegar
1 tbsp. soy sauce
2 tbsp. cornstarch
2 tbsp. cold water
1 c. plum sauce or plum jam or orange marmalade

Heat pineapple (with syrup), sugar, 1 cup water, the vinegar, and soy sauce to boiling. Mix cornstarch and 2 tablespoons water; stir into pineapple mixture. Heat to boiling, stirring constantly. Cool to room temperature; stir in plum sauce. Cover and refrigerate. Makes 6 cups.