Tennessee whiskey

Tennessee Whiskey is an alcoholic beverage from Earth, specifically from the U.S. state of Tennessee. Like other whiskeys, the beverage is made from fermented grain mash which is aged in a wooden barrel.

While camping on Earth during shore leave in 2287, Doctor McCoy used some Tennessee Whiskey as an ingredient in the beans he was cooking. The recipe he used was an old southern recipe that he had learned from his father. When Spock tried the beans he stated that it contained an element he was unfamiliar with. McCoy stated it was a secret ingredient, and Spock realized it was alcohol when Kirk asked McCoy if he had any more of that secret ingredient. When asked, McCoy confirmed that the secret ingredient was Tennessee Whiskey, and asked Spock if he would like to have a snort of the whiskey. Spock, not fully understanding McCoy's meaning then replied that he was unaware that alcohol was consumed in that manner. (TOS novelization of Star Trek V: The Final Frontier