Barnaby's Buffalo Blizzard

1 oz white creme de cacao
1 oz Galliano herbal liqueur
3/4 oz vodka
2 oz milk
1 tsp grenadine syrup
2 tbsp vanilla ice cream
1 1/2 oz whipped cream

Blend ingredients (except cream) briefly with half a glassful of crushed ice in a collins glass. Top with whipped cream. Serve with a cherry.