If berries are frozen, thaw them. If fresh, wash gently. The size of fresh baskets and frozen packages varies, but don't worry, a few berries more or less will not matter.

With a wooden spoon, or whatever works for you, press the berries through a strainer. This eliminates the seeds. Processors and blenders do not work for this seed-free sauce.

Add the sugar and liquor to the sauce and stir.

Refrigerate until needed.