The word grog refers to a variety of alcoholic beverages. The word originally referred to a drink made with water or "small beer" (a weak beer) and rum, which British Vice Admiral Edward Vernon introduced into the Royal Navy on 21 August 1740. Vernon wore a coat of grogram cloth and was nicknamed Old Grogram or Old Grog. Modern versions of the drink are often made with hot or boiling water, and sometimes include lemon juice, lime juice, cinnamon or sugar to improve the taste. Rum with water, sugar and nutmeg was known as bumbo and was more popular with pirates and merchantmen.
In Sweden and some subcultures within the English-speaking world, grog is a common description of drinks not made to a recipe (in Sweden the mixture is usually between 25%-50% spirit and 75%-50% softdrink), but by mixing various kinds of alcohol and soda, fruit juice or similar ingredients (in the USA this would be a highball with no defined proportions). The difference between the Swedish definition of grog and long drinks, mixed drinks or punches is the number of ingredients. The number of ingredients in drinks may vary, but grog typically has just one kind of liquor (most commonly vodka or brännvin, cognac or eau de vie) and one kind of a non-alcoholic beverage. Grosshandlargrogg (Wholesaler grogg) refers to a mix of Eau de vie and Trocadero (a caffeinated apple- and orange flavored soft drink).
In Fiji, the term "grog" refers to a drink made by pounding sun-dried kava root into a fine powder and mixing it with cold water. Traditionally, grog is drunk from the shorn half-shell of a coconut, called a "bilo."
Grog has also been used as a metaphoric term for a person's vices, as in the old Irish song "All for Me Grog".
Origin and history 
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Sailors require significant quantities of fresh water on extended voyages. Since distilling sea water was not practical, fresh water was taken on board in casks but quickly developed algae and became slimy. Stagnant water was sweetened with beer or wine to make it palatable, which involved more casks and was subject to spoilage. As longer voyages became more common, the task of stowage became more and more difficult and the sailors' then-daily ration of a gallon of beer began to add up.
Following Britain's conquest of Jamaica in 1655, a half pint or "2 gills" of rum gradually replaced beer and brandy as the drink of choice. Given to the sailor straight, this caused additional problems, as some sailors saved the rum rations for several days to drink all at once. Due to the subsequent illness and disciplinary problems, the rum was mixed with water. This both diluted its effects and accelerated its spoilage, preventing hoarding of the allowance. A half pint (half of 473 ml; current American measurement; the larger British "Imperial" pint was not introduced until 1824) of rum mixed with one quart (1136 ml) of water and issued in two servings, before noon and after the end of the working day, became part of the official regulations of the Royal Navy in 1756 and lasted for more than two centuries. This gives a ratio of 4:1 (water:rum).
Citrus juice (usually lime or lemon juice) was added to the recipe to cut down on the water's foulness. Although they did not know the reason at the time, Admiral Edward Vernon's sailors were healthier than the rest of the navy, due to the daily doses of vitamin C that prevented disease (mainly scurvy). This custom, in time, got the British the nickname limeys for the limes they consumed.
The name "grog" probably came from the nickname of Admiral Vernon, who was known as "Old Grog" because he wore a grogram cloak. American Dialect Society member Stephen Goranson has shown that the term was in use by 1749, when Vernon was still alive. A biographer of Daniel Defoe has suggested that the derivation from "Old Grog" is wrong because Defoe used the term in 1718, but this is based on a miscitation of Defoe's work, which actually used the word "ginger."
The practice of serving grog twice a day carried over into the Continental Navy and the U. S. Navy. Robert Smith, then Secretary of the Navy, experimented with substituting native rye whiskey for the imported rum concoction. Finding the American sailors preferred it, he made the change permanent. It is said his sailors followed the practice of their British antecedents and took to calling it "Bob Smith" instead of grog.
Unlike their Navy counterparts, American merchant seamen were not encouraged to partake of grog. In his 1848 testimony before a parliamentary committee, Robert Minturn of Grinnell, Minturn & Co "stated that teetotalism not only was encouraged by American ship-owners, but actually earned a bonus from underwriters, who offered a return of ten percent of the insurance premium upon voyages performed without the consumption of spirits ... The sailors were allowed plenty of hot coffee, night or day, in heavy weather, but grog was unknown on board American merchant ships."
Although the American Navy ended the rum ration on September 1, 1862, the ration continued in the Royal Navy. The temperance movements of the late 19th century began to change the attitude toward drink and the days of grog slowly came to an end. In 1850 the size of the tot was halved to a quarter of a pint per day. The issue of grog to officers ended in 1881, and to warrant officers in 1918. On January 28, 1970 the "Great Rum Debate" took place in the House of Commons, and on July 31, 1970 the last pipe of "Up Spirits" in the Royal Navy was heard and is referred today as "Black Tot Day". (Although all ratings received an allowance of an extra can of beer each day as compensation.)
Until the grog ration was discontinued in 1970, Navy rum was 95.5 proof, or 54.6% alcohol; the usual ration was an eighth of a pint, diluted 2:1 with water (3:1 until World War II). Extra rum rations were provided for special celebrations, like Trafalgar Day, and sailors might share their ration with the cook or with a messmate celebrating a birthday. Until the early 20th century, "six water grog" (rum diluted with water at a 6:1 ratio) was sometimes issued as a punishment to sailors found guilty of drunkenness or neglect.
Over time the distribution of the rum ration became encrusted with elaborate ritual. At 11am the boatswain’s mate piped 'Up spirits,' the signal for the petty officer of the day to climb to the quarterdeck and collect (1) the keys to the spirit room from an officer, (2) the ship's cooper, and (3) a detachment of Royal Marines. In procession, they unlocked the door of the spirit room, and witnessed the pumping into a keg of one eighth pint of rum for every rating and petty officer on the ship aged 20 or more and not under punishment. Two marines lifted the keg to the deck, standing guard while a file of cooks from the petty officers' messes held out their jugs. The sergeant of marines poured the ration under direction of the chief steward, who announced the number of drinking men present in each petty officer's mess. The rest of the rum was mixed in a tub with two parts water, becoming the grog provided to the ratings.
At noon, the boatswain's mate piped Muster for Rum, and the cooks from each mess presented with tin buckets. The sergeant of marines ladled out the authorized number of “tots” (half-pints) supervised by the petty officer of the day. The few tots of grog remaining in the tub ('plushers') were poured into the drains (“scuppers”) visibly running into the sea.
The petty officers were served first, and entitled to take their rum undiluted. The ratings drank their grog in one long gulp when they finished their work around noon.
In the early stages of British settlement in Australia, the word grog entered common usage, to describe diluted, adulterated and sub-standard rum, obtainable from sly-grog shops. In the early decades of the Australian colonies such beverages were often the only alcohol available to the working class. Eventually in Australia, and New Zealand, the word grog came to be used as a slang term for any alcoholic beverage.
Honoring the 18th century British Army regimental mess and grog's historical significance in the military, the United States Navy, United States Air Force, and United States Army carry on a tradition at its formal dining in ceremonies whereby those in attendance who are observed to violate formal etiquette are "punished" by being sent to "the grog" and publicly drink from it in front of the attendees. The grog usually consists of various alcoholic beverages mixed together, unappealing to the taste, and contained in a toilet bowl. A non-alcoholic variety of the grog is also typically available for those in attendance who do not consume alcohol and can contain anything from hot sauce to mayonnaise intended to make it unappealing to the taste as well.
Various recipes 
While many claim to make a traditional Navy grog recipe, there are several accepted forms. The Royal Navy's grog recipe includes lemon juice, water, rum, and cinnamon. A commonly-found recipe in the Caribbean includes water, light rum, grapefruit juice, orange juice, pineapple juice, cinnamon, and honey.
See also 
- "The Blood of Nelson" by Glenn Barnett - Military History - Oct 2006
- Grog (8 Sep. 2008).
- Richard West, The Life and Strange Surprising Adventures of Daniel Defoe 227 (1998).
- Daniel Defoe, The Family Instructor, Vol. 2, p. 291 (1718).
- Clark, Arthur H. (1910). The Clipper Ship Era: An Epitome of Famous American snd British Clipper Ships, Their Owners, Builders, Commanders, and Crews, 1843-1869. New York: G.P. Putnam's Sons, The Knickerbocker Press. p. 109.
- "Splicing the Mainbrace". Royal Navy. 2005-07-11. Retrieved 5 November 2006.
- Dan van der Vat (2004-05-20). "Obituary: Admiral of the Fleet Lord Hill-Norton". The Guardian. Retrieved 1 November 2006.
- Brewer's Dictionary of Phrase & Fable, Millennium Edition, revised by Adrian Room, 2001
- Constance Lathrop, "Grog," U. S. Naval Institute Proceedings, Mar 1935, pp. 377–380; letter, Robert Smith to Keith Spence, 11 November 1808, RG 45 (M209, Vol. 9), DNA
- Tyrone G. Martin, "Bob Smith," Encyclopedia of the War of 1812, New York: Garland Publishing Co., 1998
- James Pack, Nelson's Blood: The Story of Naval Rum Naval Institute Press, 1982
- Christopher McKee, Sober Men and True: Sailor Lives in the Royal Navy 1900-45, Harvard, 2003
- Computer games: The Secret of Monkey Island, Monkey Island 2: LeChuck's Revenge and The Curse of Monkey Island by LucasArts.