2 cups bottled coconut water (or 2 cups fresh coconut water [from 4 fresh green coconuts])
1 cup (8 ounces) gin (or white rum), plus more to taste
1 cup sweetened condensed milk (from 1 [14-ounce] can), plus more to taste
¼ teaspoon ground nutmeg
¼ teaspoon ground cinnamon
Stir together coconut water, gin, and sweetened condensed milk in a large pitcher until well combined. Add additional gin and/or condensed milk to taste. Add nutmeg and cinnamon, and stir until well combined.
Refrigerate until completely chilled, 1 to 2 hours. Pour mixture evenly into rocks glasses filled with ice, or pour into empty coconut shells, and serve with straws.
