What is the primary ingredient in a Sombrero cocktail?

The primary ingredient in a Sombrero cocktail is Kahlua, which is a coffee-flavored liqueur. The Sombrero is a simple yet classic drink that primarily showcases the rich, sweet, and slightly bitter flavors of Kahlua, often combined with cream or milk to balance out the sweetness and add a smooth texture. This combination makes it a popular choice for those who enjoy coffee-flavored cocktails.

In contrast, whiskey, brandy, and champagne do not play a role in the traditional formulation of a Sombrero. Whiskey would provide a much stronger, more robust flavor profile, brandy adds fruitiness and warmth, while champagne would introduce bubbles and a lightness that doesn't align with what characterizes a Sombrero. Therefore, selecting Kahlua accurately captures the essence of this cocktail.