Choose firm, plump, dark-colored barries, avaiding berries with mold. Attached hulled are a sign berries were picked while immature. to store, lay a paper towel on a baking sheer; place unwashed berries in a single layer. cover with another towel and refrigerate for up to 2 days. Or, freeze for an hour on a baking sheet, them place in a container and freeze up to 9 months.
Do not wash blackberries until ready to use or they will became wterlogged. If used in a cale, be sure the batter is thick or the berries will sink to the bottom. blackberries improve with cooking, with intensifies the flavor and softens the seedy texture.