Basically, the only difference between a regular Rum and Coke, and this cocktail is lime (and its juice). In the majority of recipe variations – the lime is optional, but in my opinion, the taste is bland without it.
Take a tall 300-400 ml glass and fill with ice in half.
Cut the lime in 4 parts, for 1 serving we’ll need half of them. Squeeze a juice from 2 quarters to the glass and drop there the same lime slices which we just squeezed too.
Pour rum (60 ml) into the glass with ice.
Add 120 ml of Coke to the same glass. Mix carefully.