1 oz. of Rum
juice of half a lime
one or two teaspoons of cane sugar
fill the rest of your tin or mug with water.

Water and rum mixed together was often called Grog. A dram (a small amount) of rum was often added to a sailor's water ration. A proper grog often included lime juice to help to stave off scurvy and a measure of cane sugar to help kill the bitterness of the water.

This entire menu can also be mixed together forming the pirate stew of choice, the legendary culinary feast of Salmagundi:

1 part salted, pickled beef or pork.
1 part fresh goat, dog, rat, cat or seabird.
1 part pickled vegetables, eggs, anchovies.
1 part grapes, crabapples, fresh fish, breadfruit "spagetti" and black banana mush.

Add tons of garlic, sugar, honey, salt, vinegar, oil, wine, cinnamon to taste. Serve hot from the cauldron. Garnish with musty croutons and wilted greens.