“How do you make Swiss cheese?”/“With a holey cow.”

A riddle about the holes in Swiss cheese is:
   
Q: How do you make Swiss cheese?
A: with a holey cow.
   
“Do they use holy cows to make Swiss Cheese?” was posted on Twitter on April 5, 2009.
 
“Holy cow!” was a catchphrase of New York Yankees announcer Phil Rizzuto (1917-2007). “Do holy cows make Swiss cheese?” has been printed on an image.
 
“What kind of milk do they use to make Swiss cheese?”/“Hole milk” is a similar Swiss cheese riddle.
 
     
Wikipedia: Swiss cheese
Swiss cheese is a generic name in North America for several related varieties of cheese, mainly of North American manufacture, which resemble Emmental cheese, a yellow, medium-hard cheese that originated in the area around Emmental, in Switzerland. Some types of Swiss cheese have a distinctive appearance, as the blocks of the cheese are riddled with holes known as “eyes”. Swiss cheese without eyes is known as “blind”. (The term is applied to cheeses of this style made outside Switzerland, such as Jarlsberg cheese, which originates in Norway).
       
Twitter
Elisabeth Sparrow‏
@Eilis_Angelos
Do they use holy cows to make Swiss Cheese?
12:28 AM - 5 Apr 2009
 
Twitter
Steven Richardson‏
@SportsGuy1529
You can only make Swiss cheese from holey cows! #thepeopleiworkwith
11:12 AM - 4 May 2010
   
Twitter
Lee Gunter‏
@leegunter
Do they use milk from holy cows to make swiss cheese? #fb
3:22 AM - 21 Jun 2011
 
Twitter
Kellz 😊‏
@Kel_Turner3
What does a holy cow make?
Swiss cheese!
9:07 PM - 28 Aug 2011
 
Twitter
Erin Cornell‏
@Jadeblade10
Reply to @reggiewatts Holy cows make swiss cheese
11:56 AM - 25 May 2012
 
Twitter
Will Vlasak‏
@willvlasak
Holy cows make swiss cheese
12:12 PM - 2 Mar 2014
 
Reddit—Jokes
My kid made this one up: How do you make Swiss cheese?
submitted August 15, 2017 by NewYorkerinGeorgia
With a holey cow.