Which cocktail is primarily made with tequila?

The Margarita is primarily made with tequila, which is a key ingredient that defines this classic cocktail. It typically consists of tequila, lime juice, and orange liqueur, often served with salt on the rim of the glass. The use of tequila, a spirit distilled from the blue agave plant, is essential to the Margarita's distinct flavor profile, which balances the sweetness of the orange liqueur and the tartness of lime juice.

In contrast, a Martini is made with gin or vodka and vermouth, making it entirely different in terms of base spirit. The Mojito is a rum-based cocktail that combines rum, mint, lime, sugar, and soda water, so it has no tequila whatsoever. Meanwhile, the Bellini is a cocktail made with Prosecco and peach purée, further emphasizing the lack of tequila as a defining ingredient. Therefore, the Margarita stands out as the only cocktail among the choices that is primarily associated with tequila.