6 cups seedless blackberry puree (I ran the berries through the juicer)
1 cup water
5 cups sugar
4.5 TBSP low/no sugar powdered pectin
- Combine blackberry puree with water, and sprinkle pectin over the top, stirring constantly.
- Bring fruit/pectin mixture to a full rolling boil, which doesn't stop bubbling even with stirring. Stir continuously.
- Add sugar, and return to a boil. Stir constantly. Once the full rolling boil is resumed, boil for one minute.
- Fill sterilized jars, clean rims, place lids and rings, and process in a water bath for 20 minutes.