2 1/2 qts. blackberries
1 3/4 oz. pkg. pectin
7 c. sugar

Crush berries one layer at a time. Measure 5 cups pulp; add pectin. Bring mixture to a full boil over high heat, stirring constantly. Stir in sugar completely to prevent sticking and return to a full rolling boil. Keep stirring while you boil for 1 minute.

Remove form heat; skim foam from surface and pour into hot sterilized jars. Wipe rims and seal with hot lids and screw bands. Process 15 minutes in boiling water bath. Invert jars for 30 minutes to prevent floating fruit. Yield: 8 3/4 cups.