Which step is NOT part of the House Margarita on the rocks recipe?

The correct answer pertains to the preparation method of the House Margarita on the rocks. This particular drink is made by combining ingredients directly in a glass over ice and does not involve blending. Instead, the cocktail includes fresh lime juice and typically features tequila and an orange liqueur, which are poured over ice and stirred or shaken directly in a shaker before being served.

In this context, blending would be an unnecessary step for a drink that is intended to be served on the rocks. A margarita served on the rocks should maintain the integrity of the individual components and provide a refreshing, chilled drink without the texture typically associated with a blended drink. Therefore, the correct answer emphasizes that blending ingredients is not a step taken in the preparation of a House Margarita on the rocks.