What is the primary spirit used in a Brandy Alexander?

In a Brandy Alexander, the primary spirit is brandy, which is a distilled liquor made from fermented fruit juice, usually grapes. The drink is a classic cocktail that combines brandy with crème de cacao and cream, creating a rich and creamy texture that balances the sweetness of the chocolate liqueur with the warmth of the brandy.

The choice of brandy is essential to the cocktail's identity, as it imparts distinctive flavors and characteristics that define the Brandy Alexander. Brandy is often associated with a smooth and fruity profile, making it an ideal base for this particular drink.

The other spirits listed, such as vodka, whiskey, and gin, do not align with the traditional formulation and flavor profile of a Brandy Alexander. Each of these spirits has its own unique taste characteristics, which would alter the intended flavor of the cocktail significantly. Hence, brandy is the critical ingredient that establishes the true essence of a Brandy Alexander.