Blackberries
I'm sure everyone knows of at least two ways to prepare blackberries, so I won't provide any recipes. (Although if you melt vanilla ice cream and gently fold in the blackberries, once refrozen you have blackberry ice cream! Bruising the berries beforehand will release some of the berries' juice, and if folded in to the ice cream gently enough, this will create a raspberry ripple effect.)
Back to my point! Washing freshly picked blackberries can be a bit of a pain, as no matter how thoroughly you think you've washed them, one or two little bugs always seem to crawl out of the nooks!