1 qt. fresh blueberries
1 qt. fresh red raspberries
7 c. sugar

Measure 4 cups berries into large saucepan (add water if necessary to make 4 cups), add 7 cups sugar. Heat to a full rolling boil and boil hard for one minute, stirring constantly. Remove from heat. Stir in 3 ounces liquid pectin. Skim. Pour into 8 hot sterilized 1/2 pint jars. Seal at once.