We grow blackberries at our place. Wow...yours are further along that ours. Our patch won't be ready for another 2-3 weeks. When they are ready, we'll be looking at bushels and bushels of them all at once. I try to make jam, juice and syrup with them, but freezing usually works well for all of the left overs. Wash, drain, when dry, put into freezer bags and pop them into the freezer. The frozen berries are great for smoothies.
Also, when we make jam, we use Pomona's Universal Pectin. It's a little more expensive, but it comes with a packet of
monocalcium phosphate, which really helps make the jam, or jelly set nicely....no more failures. (We obviously don't have enough calcium in our water and soil. I have to add calcium to my tomato plants as well.)
~ C