El Diablo is a bold and refreshing tequila cocktail that balances sweet, tart, and spicy flavors. Made with tequila, crème de cassis (a rich blackcurrant liqueur), lime juice, and topped with ginger beer, it has a deep fruity backbone lifted by zesty lime and a lively, spicy fizz. First popularized in the 1940s, the El Diablo offers a darker, more mysterious twist on typical tequila drinks, making it a standout choice for something a little unexpected yet still easy to enjoy.