The Mexican Mule is a Mexican twist on the classic Moscow Mule. It is made with tequila, lime juice, ginger beer, and a dash of bitters. The combination of the tequila and ginger beer creates a refreshing and slightly spicy flavor, while the lime juice adds a tangy kick. The Mexican Mule is often served in a copper mug, which helps to keep the drink cold. This cocktail is a great choice for those who enjoy a zesty and effervescent drink.