The phrase "egg in your beer" refers to wanting a bonus or something for nothing. Its common usage is: "What do you want? An egg in your beer?" However, this does not seem to make much sense, as an egg in your beer doesn't sound like a bonus at all! Does anyone know the etymology of this phrase? I have only managed to find two hypotheses:
- At one time, in some parts of the United States, an egg in an alcoholic beverage may have been considered an aphrodisiac.
- The phrase arose from, or became popularized by, American WWII soldiers. It may have been alluding to the notion that in wartime, both beer and eggs were not easily obtained.
However, I've found no definitive references to back up either of these claims.
Best Answer
Aeroplane factory slang
The earliest example I can find of the phrase pre-dates World War II, in the April 1938 edition of American Speech (Vol. 13, No. 2, pp. 155-157) in a list of "Aeroplane Factory English" by Edwin R. Coulson:
A footnote says this "trade dialect" was collected at the Douglas Factory, Santa Monica, California.
Army slang
The October 1941 edition of American Speech (vol XVI, no 3) carried a "Glossary of Army Slang", including:
The earliest military use I found was by PFC. George H. Willers of the US Marine Corps in a letter to Life magazine (8th September 1941):
The American Heritage Dictionary of Idioms says:
A December 1946 American Speech (vol XXI, no 4) includes 'Army Speech in the European Theater’ by Joseph W. Bishop, Jr.:
Dewdroppers, Waldos, and Slackers: A Decade-by-Decade Guide to the Vanishing Vocabulary of the Twentieth Century (2003) by Rosemarie Ostler lists it under the forties:
The Facts on File dictionary of clichés suggests it could be an aphrodisiac, and mentions an 1883 recipe containing egg white and mead, but says these rare recipes are probably unrelated to the saying, and that it "is presumably viewed as some kind of enrichment".
Eric Partridge's A Dictionary of Catch Phrases (1986):
Real egg in real beer
A preview from a (probable 1915) Catering industry employee: Volume 24 reports on a Seattle court case on whether egg-in-beer is food or a drink:
And:
Von Ziemssen's Handbook of General Therapeutics (1885) lists "Warm beer with egg" and Practical Druggist and Pharmaceutical Review of Reviews lists "Root Beer with Egg".
The Archives of Pediatrics (1916) says with surprise:
A 19th century The Pet-Stock, Pigeon, and Poultry Bulletin says:
So, who's going to test it out and crack an egg into their beer this weekend?