This guava margarita is made with guava juice or puree, along with other ingredients such as tequila, citrus juice, and sweeteners.
Rim the glass with salt or sugar (optional). In a cocktail shaker, combine tequila, guava juice, lime juice, simple syrup, and ice cubes. Shake well until chilled. Strain the mixture into a glass filled with ice cubes. Garnish with a lime wedge or guava slice.