Wash and remove stems from the fruit. Crush the fruit using a muddle. Alternatively you can slice or dice the fruit into your desired size. Any one of these works
Add ½ of the Xylitol the recipe calls for into the blueberries (or other fruit) along with the citric acid. Mix this well and allow them to macerate for 30 minutes. Stir periodically to help dissolve the Xylitol. Refrigerate this mixture until needed
In a separate bowl dry mix together the NH pectin and the remaining half of Xylitol.
Pour the Xylitol and pectin mixture into a small heavy bottomed saucepan and stir in the water.
Heat the Xylitol, NH pectin, and water mixture to a boil.
Once this has come to a boil allow it to cool to 115-120°F while stirring.
When it reaches 120°F it can be stirred into the fruit mixture.
Separate this into 4 oz mason jars and allow them to set in the refrigerator for 2 hours.
Once they have set, store them in the freezer until needed.
Once thawed it will be ready to use for up to 2 weeks.