Yield: Makes 1 cocktail
2 ounces (4 tablespoons) whole milk
1 1/2 ounces (3 tablespoons) horchata liqueur (such as RumChata)
3/4 ounce (1 1/2 tablespoons) bourbon
1/2 ounce (1 tablespoon) amaretto liqueur
1/4 teaspoon fresh lime juice
Combine milk, horchata liqueur, bourbon, amaretto liqueur, and lime juice in an ice-filled cocktail shaker; shake vigorously until thoroughly chilled (about 30 seconds). Strain into a glass. Dust with grated nutmeg, if desired.