That's another one where there is a bunch of different ways. My way was simple syrup, squeeze a lime, and a couple mint leaves. Muddle that. Top with ice and then build with quality white rum, soda water, and then garnish with lime. Some people use a little sweet & sour or 7up instead of soda but I like the more traditional recipe. You can get creative and throw a strawberry in with the simple syrup & mint to muddle for a twist. Great brunch drink after a long night of boozin. When it's done just right it's a citrus semi-sweet cocktail and that mint gives it a cool sensation more than a mint flavor.