What is the primary spirit used in the Mile Hi Marg?

The primary spirit used in the Mile Hi Marg is tequila, which is a staple in many margarita recipes. Tequila, made from the blue agave plant primarily in the region surrounding the city of Tequila in Mexico, provides the distinct flavor profile that is characteristic of margaritas. This spirit is known for its bold and earthy flavors, which complement the sweetness of liqueurs, such as triple sec or orange liqueur, and the tartness of lime juice in a traditional margarita.

Using vodka, rum, or gin would significantly alter the drink's intended flavor and texture, creating a drink that is not aligned with the classic margarita experience. Therefore, the use of tequila is essential for maintaining the authenticity of the Mile Hi Marg.