Wash Wish Farms Blackberries with cool water and pat dry.
In a small saucepan, pour both containers of blackberries, sugar, and lemon juice then cook on high until boiling.
Drop the temperature to a medium-low and stir while the sauce thickens.
If desired, put the mixture through a strainer to remove the blackberry seeds. We strained half of our blackberry sauce so we had 1/2 with seeds and 1/2 without for our Blackberry store-bought cake hack.