Prepare the Fruit: Slice the dark fruits (such as blackberries, plums, and dark cherries) and set them aside.
Mix the Base: In a large pitcher, combine the red wine, black cherry juice, and brandy. Stir gently to mix the liquids.
Add the Fruit: Add the sliced dark fruits to the pitcher, stirring them into the mixture. The fruits will infuse the drink with their flavors as it chills.
Chill: Cover the pitcher and place it in the refrigerator to chill for at least 2 hours. This allows the flavors to meld together, creating a rich and cohesive taste.
Serve: Just before serving, add the splash of soda to the pitcher if you prefer a lighter, more effervescent sangria. Pour the sangria into glasses over ice, ensuring each glass gets some of the fruit.
Garnish (Optional): For an extra gothic touch, garnish each glass with a slice of dark fruit or a sprig of mint.