What is the main ingredient in a Buttery Nipple cocktail?

The main ingredient in a Buttery Nipple cocktail is butterscotch schnapps. This sweet, syrupy liqueur is essential for achieving the characteristic flavor profile of the drink, which aims to mimic the taste of butterscotch candies. The combination of butterscotch schnapps and other components like Irish cream creates a dessert-like cocktail that is rich and smooth, making it popular among those who enjoy sweet drinks.

The other choices, while they may be used in various cocktails, do not form the primary flavor base of a Buttery Nipple. For instance, Bailey's Irish Cream can complement butterscotch schnapps in this cocktail, but it is not the main ingredient. Similarly, Sambuca and Grand Marnier do not contribute to the signature flavor that defines a Buttery Nipple. Understanding the primary ingredients of cocktails helps bartenders create drinks accurately and meet customer expectations.