With Don Julio Tequila, cucumber, club soda, and lime juice—the Gluten-Free Cucumber Margarita is a refreshing-tasting way to celebrate Cinco De Mayo. Ingredients: 1 oz. Don Julio Blanco, 1/2 oz. Fresh Lime Juice, 1/8 oz. Agave Nectar, 1/2 oz. Club Soda, Cucumber Slices, Lime Wedge. Preparation: Combine Don Julio Blanco, fresh lime juice, and agave nectar into a cocktail shaker with ice. Shake well. Strain into a glass. Top with club soda and garnish with a cucumber slice.