Grape Jelly - cooking recipe

Ingredients

3 lb. black grapes
7 c. sugar
1 pouch fruit pectin
1/2 tsp. margarine

Preparation

Remove stems from grapes and crush.
Place in large pan.
Add 1/2 cup water. Bring to a boil and simmer until grapes are fully cooked (stir occasionally). Strain cooked grapes, saving juice. Measure 4 cups of juice. Stir in sugar and add margarine. Bring mixture to a full rolling boil over high heat, stirring constantly.
Quickly stir in fruit pectin and boil for 1 minute, stirring constantly.
Immediately fill scalded jars with hot jelly mixture.
Cover and seal jars.