To make blackberry bramble, first crush all the blackberries with a little sugar and cook into a simple syrup. Set aside once done.
Pour whisky into a clean, clear cocktail glass. Add the prepared blackberry syrup to it along with a splash of lime juice and some ice, then stir.
Garnish the blackberry bramble with a sprig of mint and cocktail stick adorned with two or three fresh blackberries on the top, serve.