“How do you handle a dangerous cheese?”/“Caerphilly.”

Caerphilly cheese originates in the town of Caerphilly in Wales. The cheese has been the subject of some obvious puns, such as this one in 1994:
 
Q: How do Welsh people eat cheese?
A: Caerphilly.

 
“How do you handle dangerous cheese? ... Caerphilly” was cited on Twitter on January 14, 2010.
 
     
Wikipedia: Caerphilly cheese
Caerphilly is a hard, white cheese that originates in the area around the town of Caerphilly in Wales, although it is now also made in England, particularly in the South West and on the English border with Wales. It was not originally made in Caerphilly, but was sold at the market there, hence taking the town’s name.
 
Caerphilly is a light-coloured (almost white), crumbly cheese made from cow’s milk, and generally has a fat content of around 48%. It has a mild taste, with its most noticeable feature being a not unpleasant slightly sour tang.
 
Google Books
The Father Christmas:
It’s a Blooming Terrible Joke Book

BY Raymond Briggs
Puffin
1994
Pg. 44:
How do Welsh people eat cheese?
Caerphilly.
   
Google Groups: rec.humor
More crackers
David Bridges
6/25/97
(...)
How do people eat cheese in Wales?
Caerphilly.
 
Google Books
Penguin Pocket Jokes
By David Pickering
New York, NY: Penguin Books
2006
Pg. ?:
How do Welsh people eat cheese?
Caerphilly.
 
Twitter
punoftheday
‏@punoftheday
How does a Welsh man eat cheese? Caerphilly http://www.punoftheday.com/pun/3175
8:05 AM - 14 Oct 2008
 
Twitter
X Kyle M Thompson
‏@xkylet
How do you handle dangerous cheese? ... Caerphilly
12:21 PM - 14 Jan 2010
 
Google Books
The Little Book of Cheese Jokes
By Jake Harris
West Sussex: Summersdale Publishers Ltd
2015
Pg. ?:
Which Welsh cheese must you always eat with caution?
Caerphilly.
   
Hexjam
17 of the best cheese jokes of all time
Cheesy does it.

Rich Cooper - 13 February 2015
(...)
How do you handle dangerous cheese?
Caerphilly.
 
Twitter
Raging Groaners
‏@RagingGroaners
How does a cautious Welshman handle his cheese? Caerphilly. #raginggroaners
12:52 AM - 29 Feb 2016