Freezer Blueberry Jam 3 cups crushed blueberries, or about 3 pints of rinsed berries 5 1/4 cups granulated sugar 1 tbs lemon juice 1 pkg powdered pectin 3/4 cup water Crush berries in a large bowl. Add lemon juice. Stir in sugar and let stand for 10 minutes. In a saucepan, mix pectin and water. Bring to a full boil. Boil, stirring constantly, for 1 minute. Mix pectin mixture into fruit. Stir for 3 minutes. Pour fruit mixture into freezer containers or small canning jars, leaving 1/2-inch headspace. Cover immediately and let stand at room temperature for 24 hours. Store in the freezer. Makes about 6 cups.