Try to pick blackberries that are away from the roadside (traffic fumes can impair the fruit) and avoid picking fruit from lower branches as they may have been visited by animails!
Blackberries don't keep for long so either eat them within 24 hours of picking or freeze them. If you are freezing them, lay them in a single layer on a baking tray in the freezer and then once frozen, transfer to a freezer bag
Remember to pick your blackberries by Michaelmas Day (29th September), by legend - the day the Devil spits on them, making them inedible.
Blackberry Recipes at the BBC
