Blueberry Jelly

4 to 4&1/2 cups blueberry juice
1/2 cup lemon juice
8 cups white sugar
1 bottle Certo

To produce blueberry juice, use 10 cups of fresh blueberries. Crush blueberries thoroughly and add 1/2 cup boiling water. Put in a jelly bag and squeeze the juice through. In a large pot, mix sugar with blueberry and lemon juices. Place over high heat and bring to a boil. As soon as a rolling boil is reached, immediately stir in Certo. Return to a full rolling boil and boil for one minute, stirring constantly. Remove from heat, skim anything from the top, then ladel into sterile jars. Makes 8-10 250ml jelly jars.
Submitted by Ethel Walker