What is the main ingredient in a Buttery Nipple cocktail?

In a Buttery Nipple cocktail, the main ingredient is Irish Cream. This cocktail is typically crafted by layering Irish Cream with a butterscotch schnapps, which gives it the signature buttery flavor that the name describes. The creamy texture of the Irish Cream complements the sweetness of the butterscotch, creating a rich and smooth drink that is both visually appealing and flavorful.

The choice of Irish Cream is essential because it provides a creamy mouthfeel and a distinct flavor profile that characterizes this drink. The other ingredients, while they have their own unique profiles, do not play a central role in this particular cocktail, making Irish Cream the standout component that defines the Buttery Nipple.