Rum Runner

Ingredients:

For the Rum Runner:
1 1/2 oz. darkish rum
1 ounce banana liqueur
1 ounce blackberry liqueur (or other berry liqueur, admire crème de cassis or Chambord)
1 ounce pineapple juice
1 ounce freshly squeezed lime juice
1/2 ounce grenadine (recipe under)
Cocktail cherry and pineapple wedge, for garnish (non-compulsory)
For the Homemade Grenadine:
1/2 cup pomegranate juice
1/2 cup granulated sugar