Black Frost was a brand of beer Jack sold at his pub. Tired of dealing with the conceited students at UC Sunnydale, Jack laced the beer with a potion made according to a formula of his brother-in-law.[1]
The students Colm, Hunt, Kip, Roy, and Buffy Summers consumed the beer, making them gradually become "cavemen." The effects eventually wore off after a day.[1]
Appearances[]
- "Beer Bad"
- "Something Blue" (Only mentioned)
- Big Bad: A Novel