Romulan ale

Romulan ale is an alcoholic beverage developed and made popular in Romulan culture. It is notable for its distinctive blue color, the hue of which may be lighter or darker depending upon its vintage. In the Romulan tongue, this intoxicating drink is called Kali-fal. Due to the embargo against the Romulans established in the 23rd century, possession and consumption of Romulan ale was made illegal within the jurisdiction of the Federation Starfleet, although some physicians, such as Doctor Leonard McCoy have been known to use it for medicinal purposes. It was also not uncommon for some starship captains to keep a supply of Romulan ale on their ships for formal functions.

History
On March 22nd in the year 2285, Doctor McCoy presented Admiral James T. Kirk with a bottle of Romulan Ale to celebrate his 52nd birthday.

In 2293, the crew of the USS Enterprise NCC-1701-A had a diplomatic dinner function with Klingon Chancellor Gorkon and his entourage as a preamble to a prending peace summit between the Klingon Empire and the United Federation of Planets. Enterprise crew member Lieutenant Valeris recommended serving Romulan ale to help smooth things over during what was expected to be an extremely uncomfortable meal. Later that evening, Kirk made a notation in his personal log that Romulan ale was no longer to be served at formal functions.

In 2379, a wedding reception was held for two members of the USS Enterprise NCC-1701-E; the newly promoted Captain William T. Riker and Counselor Deanna Troi. During the festivities, Lieutenant Commander Worf apparently consumed copious amounts of Romulan ale and grew severely ill.