Since I would not ruin good shrimp with mint, I substituted 2 cloves of garlic for it and reduced the sugar to 2 tablespoons. This made an excellent marinade to some great shrimp.
How to Make It
In a medium bowl, combine mint leaves, sugar, and shallot. Pound with a wooden spoon to crush coarsely.
Whisk in rum, lime juice, oil, lime zest, and salt. Whisk until salt dissolves.