“What do you get from an invisible cow?”/“Evaporated milk.”

A cow riddle is:
 
Q: What do you get from an invisible cow?
A: Evaporated milk.
 
The joke has been cited in print since at least 2007.
 
“What do little ghosts drink?”/“Evaporated milk” is a related joke. “The cows are giving evaporated milk” (Texas heat joke) is a related saying.
   
         
Wikipedia: Evaporated milk
Evaporated milk, known in some countries as unsweetened condensed milk, is a shelf-stable canned milk product with about 60% of the water removed from fresh milk. It differs from sweetened condensed milk, which contains added sugar. Sweetened condensed milk requires less processing since the added sugar inhibits bacterial growth.
 
The product takes up half the space of its nutritional equivalent in fresh milk. When the liquid product is mixed with a proportionate amount of water, evaporated milk becomes the rough equivalent of fresh milk.
   
funnyjoke.com.au
Category: Cow jokes
Date Added: 10/10/2007
Joke: What do you get from an invisible cow? Evaporated milk!
 
25 February 2009, Post (Durban, South Africa), “LEI,” pg. 14:
Q: What does an invisible cow drink?
A: Evaporated milk
     
Twitter
Bollywood Sargam
@bollywoodsargam
Cow jokes - 3196 Joke: What do you get from an invisible cow?
Evaporated milk! .... http://tinyurl.com/px7n76
1:59 AM - 26 May 2009
 
Google Books
More Laugh-Out-Loud Jokes for Kids
By Rob Elliott
Grand Rapids, MI: Revell
2014
Pg. ?:
Q: What do you get from an invisible cow?
A: Evaporated milk
   
Google Books
Sensible Nonsense.. Frank’s Comic Pack:
Humour Pack Series
By Frank Paul
BookBaby
2014
Pg. ?:
What do you get from an invisible cow? Evaporated milk!
 
Twitter
lorraine Jo King
@LahLahBean
#badjokefriday
What do you get from an invisible cow?
Evaporated milk!
12:40 AM - 26 Jul 2018