2 cups water
3/4 cup brown sugar
1/2 cup white sugar
1 (3 inch) piece of fresh ginger, peeled and thinly sliced
2 tablespoons whole peppercorns
1 teaspoon whole allspice berries
6 ounces cinnamon sticks
1 (750 milliliter) bottle vodka
1 (750 milliliter) bottle rum
2 cups orange juice
1/2 cup pineapple juice
1 (7 pound) bag of crushed ice
10 lemon slices
Bring the water, brown sugar, white sugar, ginger, peppercorns, allspice, and cinnamon sticks to a boil in a saucepan. Reduce heat to medium-low, cover, and simmer 30 minutes. Strain the liquid into a heatproof container, and discard the spices. Refrigerate overnight to cool.
Pour the chilled spice mixture into a large punchbowl. Stir in the vodka, rum, orange juice, pineapple juice, and crushed ice. Garnish with lemon slices to serve.