Boston Cream Pie Martini

1 1/2 oz vanilla vodka
1 1/2 oz chocolate liqueur
1 1/2 oz Irish cream
Powdered cocoa, to dip rim of glass

Add drink ingredients to a cocktail shaker half-filled with ice cubes, in equal parts. Shake vigorously.* Strain into a margarita or large cocktail glass with a cocoa dipped rim, and serve.

*Water is added to a drink from the ice that is used to mix it with. The role of the water in any cocktail is to calm down the flavors all around and to reduce the "burn" of the alcohol. This is extremely important for creating a cocktail that is smooth and relaxing.