Good recipe for sour blackberries?
I bought an 18 oz package of blackberries at the store, and they're incredibly sour. I only have 9 or 10 oz left, but I just don't want to keep eating them plain. I'm thinking some sort of slump or variation on blueberry boy bait, I just want something truly delicious. I do have some other fruit in the house and some frozen berries, so I could mix and match a bit...Suggestions?