To mark four years off the piss I give you the story of grog, courtesy of Brewer's:
Grog. Spirits; properly rum diluted with water. In 1740 Admiral Vernon, when Commander-in-Chief West Indies, substituted watered-down rum for the neat spirit then issued to both officers and men. The admiral was nicknamed Old Grog from his grogram coat and the name was transferred to the new beverage.
A mighty bowl on deck he drew;
And filled it to the brink;
Such drank the Burford's gallant crew,
And such the gods shall drink,
The sacred robe which Vernon wore
Was drenched within the same;
And hence his virtues guard our shore,
And Grog derives its name
~~ TT: Written on board the Berwick
Grog was originally issue twice daily, as a quarter of a pint of rum with a pint of water. The ration was cut to one issue in 1824 and reduced to a half-gill in 1850. The issue to the officers was stopped in 1881 and to warrant officers in 1918. Grog ration to all ratings ended on 31 July 1970.