My grandparents had what seemed like a mile of boysenberries vines, and I never minded the scratches from picking them 'cause they were so good. One of my favorite memories is the summer my granddaddy wrote Girls'nBerries on each jar we canned. This isn't my grandmother's special recipe I learned as a child, but it's nice since it uses canned berries...fresh boysenberries are so hard to come by anymore. Adapted from a recipe I saw on Mom's Cooking. By the way, I have halved the recipe in a smaller pan and it worked out fine.