Which ingredient is used in a Slippery Nipple cocktail?

In a Slippery Nipple cocktail, Sambuca is the key ingredient. This anise-flavored liqueur is known for its distinctive flavor and is often associated with sweet and herbal notes. The Slippery Nipple is typically made by layering Sambuca with Irish Cream liqueur, creating a visually appealing drink that highlights the rich, creamy texture of the Irish Cream against the clear, viscous Sambuca.

The use of Sambuca in this cocktail not only provides the primary flavor but also enhances its unique layering effect, making it a popular choice in bars and cocktail menus. The characteristics of Sambuca, combined with the creamy Irish Cream, work together to create a balanced and enjoyable drinking experience.