You will need a tall glass for this one!
Cut the lime into wedges and place them in a highball glass. Add the sugar and muddle ingredients together. Add the mint leaves and muddle lightly again.
Throw in half the crushed ice and the Bacardi. Stir it all well to dissolve the sugar.
Top up with more crushed ice and soda water. Stir well again and garnish
with a fragrant sprig of fresh mint.