Grog

Source Adventurer’s Armory

A foul mix of different alcohols and whatever’s handy, grog was invented by pirates and sailors and never managed to crawl far onto land. Grog is no one’s first choice of drink, but anyone who’s spent enough time on a ship has had at least a taste.

The listed prices are for a tavern or restaurant in an average city.

Additional Information from Pirates of the Inner Sea:

Sailors, especially on pirate crews, often demand daily rations of alcohol. To prevent hoarding of alcohol (resulting in drunkenness and subsequent hangovers), most captains mix alcohol with water and a bit of lime or lemon juice to make grog. The water dilutes the alcohol and causes it to spoil more quickly, while the citrus juice masks the taste of spoilage and also prevents scurvy.