In a cocktail shaker with ice add tequila, syrup, elderflower liqueur, lemon juice and mint sprig. Shake for 30 seconds. Strain into a cocktail glass filled with ice. Garnish with fresh mint sprig cucumber slices
*Cucumber simple syrup: In a saucepan on medium heat add 1 cup water, 1 cup sugar and 1 cucumber sliced. Bring to a boil and stir until sugar has dissolved. Simmer for 3 minutes. Take off heat and allow it to steep for 15–20 minutes.