Cuba Libre

Steps

1. 1
   Fill a tall glass to the top with ice. A full glass of ice actually dilutes less than a half-full one, because it stays cold.
2. 2
   Squeeze the lime half directly into the glass and drop the spent shell in.
3. 3
   Pour over the rum.
4. 4
   Top with cola, poured slowly down the side of the glass to keep the fizz.
5. 5
   Give one gentle lift with a bar spoon from the bottom.
6. 6
   Serve with a straw. Without the fresh lime this is simply a rum and coke.