It's not just the fruits of the blackberry plant that you can eat, you can also eat the new young shoots of the plant too..
Look for the nice new emerald green shoots, remember there are over 400 different types of blackberry subspecies and they all taste slightly differently, so do the shoots!
you can see the 5 sided stem here, you just need to peel off the outer skin to get at the goodness underneath
once peeled all that lovely moist inner goodness is revealed, simply break it off and eat
they taste lovely and even have quite a blackberry taste, a very nice spring treat.