Place the raspberries in a large sturdy jug and add the sugar, mint leaves and chopped ginger. Put one end of a wooden rolling pin into the jug and gently bash or 'muddle' it for a couple of minutes until the leaves have broken down and everything is mashed together.
Add a couple of big handfuls of ice cubes and bash again to break down the ice a little. Top with the vodka and ginger beer and give it all a good stir. Serve your lovely pink cocktail in glasses with an extra couple of raspberries and a few mint leaves.