Created by Fizzybrat on July 31, 2017
Step 1: In a strainer placed over a large bowl thaw the blackberries.
Step 2: Once the berries are thawed, press to remove all the juices so you are left with only the seeds in the strainer, discard seeds.
Step 3: Stir the sugar into the puree, taste, adding more sugar if necessary.
Step 4: Refrigerate for several hours or overnight.