Barnaby's Buffalo Blizzard

Pour the white crème de cacao, Galliano herbal liqueur, and vodka into a cocktail shaker filled with ice.

Add the milk to the shaker with the spirits.

Shake vigorously for 10-15 seconds until the mixture is well-chilled and combined.

Strain the mixture into a chilled cocktail glass.

Top the drink with a generous dollop of vanilla ice cream, approximately 2 tablespoons per serving.

Drizzle the grenadine syrup over the ice cream in a thin stream.

Crown the drink with 1½ ounces of whipped cream and serve immediately.