Which ingredient is included in the house margarita mix?

The house margarita mix at Texas Roadhouse includes Triple Sec, which is an orange-flavored liqueur made from the dried peels of bitter and sweet oranges. It serves to enhance the flavor of the margarita by providing a citrusy sweetness that balances the tartness of the lime juice and the warmth of the tequila. This combination creates a well-rounded and refreshing drink that is characteristic of the margarita served at the restaurant.

The other ingredients listed do not appear in the house margarita mix, which is specifically designed for a classic margarita experience. Tequila Rose is a strawberry cream liqueur, Peach Schnapps is a peach-flavored schnapps that adds fruitiness but is not traditional for a margarita, and Parrot Bay refers to flavored rums which are not typically used in a classic margarita recipe.