Combine the bourbon, pickled blackberry juice and lime juice in a pitcher. Chill until ready to serve. When that time comes, add the ginger beer.
Fill highball glasses with ice and pour the cocktail over the top. Garnish with a few pickled blackberries. Enjoy!
Combine the vinegar, tea, honey, sugar, cardamom, cloves, cinnamon and ginger in a saucepan. Heat over medium until the sugar dissolves, about 3 minutes -- you don't want the mixture to get too hot or it will cook the berries.
Fill two pint-size Mason jars with the blackberries. Pour the pickling liquid over the berries. Seal with a lid and refrigerate for at least 3 days and up to 2 weeks.