Which ingredient is used in a Grasshopper cocktail?

In a Grasshopper cocktail, cream is an essential ingredient that contributes to its rich and smooth texture. The Grasshopper is traditionally made with equal parts of green crème de menthe, white crème de cacao, and cream, resulting in a sweet, minty, and creamy drink that is usually served in a chilled cocktail glass. The inclusion of cream not only balances the flavors but also enhances the drink's mouthfeel, making it noticeably more indulgent.

Other ingredients listed, such as Triple Sec, Amaretto, and Sour Mix, do not typically belong in a Grasshopper. Triple Sec is a sweet orange-flavored liqueur that would alter the cocktail's intended flavor profile. Amaretto is an almond-flavored liqueur, which again, does not fit with the mint and chocolate notes of a Grasshopper. Sour Mix is a combination of lemon juice and simple syrup, typically used in cocktails that require a tart flavor, which is not characteristic of a Grasshopper. The foundational role of cream in this cocktail is vital for achieving its signature taste and texture.