1. Put a couple of lime wedges and 2 tsp of caster sugar into the bottom of your glass. Give the wedges a squeeze with a spoon and mix it all around.
2. Add around 10 mint leaves and again mix around, whilst lightly pressing down on the mint.
3. Add ice (preferably crushed) to the glass, until 3/4 full.
4. Add two parts Corr-Rum-ba Silver to one part soda water (50ml:25ml)
5. Give it a really good stir, top up with more ice and add a sprig of mint to garnish