If you are after a boozy, berry bomb then you should really be making a Blackberry Tequila Smash. After gently muddling some Blackberries, add in Sugar Syrup, Grapefruit Juice and Tequila for a drink that combines the best of summer.
Muddle blackberries and Sugar Syrup in the base of a shaker tine. Add Tequila and Grapefruit Juice and shake well. Pour into a rocks glass with crushed ice.