Assemble the goods.
Fill a tall Collins glass with ice. I like to chill glasses for 10 minutes in freezer.
2 oz rum, mount gay is great for this.
You could skip the 2 dashes if cherry bitters but I find it adds a little something something.
Pour your Mexican coke... You could use normal coke, but Mexican Coke is yummy.
Drop a spoon in and out not to much you don't want to flatten your drink.
Squeeze your lime wedge... Cheers.