“What is a duck’s favorite cheese?”/“Quacker Barrel.”

A riddle about Cracker Barrel cheese was printed in Newsday (Long Island, NY) on March 1, 1998:
   
Q: What is a duck’s favorite cheese?
A: Quacker Barrel.

   
A riddle about Cracker Barrel restaurants was printed in The Item (Sumter, SC) on July 29, 2012:
   
Q: Where do ducks go for dinner?
A: Quacker Barrel.

 
The joke is “quacker” (quack + cracker).
 
   
Wikipedia: Cracker Barrel
Cracker Barrel Old Country Store, Inc. is an American chain of restaurant and gift stores with a Southern country theme. The company was founded by Dan Evins in 1969; its first store was in Lebanon, Tennessee.
 
Wikipedia: Lactalis Canada
Lactalis Canada Inc., formerly Parmalat Canada Inc., is a dairy processing company with administrative offices in Toronto, Montreal and Calgary,
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Products lines
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. Cracker Barrel cheese
         
Newspapers.com
1 March 1998, Newsday (Long Island, NY), “Jokes,” Kidsday sec., pg. 1, col. 4:
What is a duck’s favorite cheese?
Quacker Barrel.
Donna Ossenfort
 
Newspapers.com
29 July 2012, The Item (Sumter, SC), “Riddles,” pg. E7, col. 3:
Q. WHERE DO DUCKS GO FOR DINNER?
A. QUACKER BARREL!
APRIL HOOSIER, LOCKLAND, OH
 
Twitter
Brian H
@brianjharrell
My 4 year old asks me, “Where do ducks go for dinner…...The Quacker Barrel”. Original #funnykids
9:13 PM · Aug 18, 2013·Twitter for iPhone
     
Twitter
Lucy Landau
@MissLucy552
Q. What cheese do ducks like best.
A. Quacker Barrel.
9:51 PM · Feb 27, 2017·Twitter for Android
 
Twitter
born miserable
@bornmiserable
MIKE HUCKABEE: where do ducks like to eat
SARAH HUCKABEE: don’t know dad, where
MH: QUACKER BARREL GET IT HA HA SEND TWEET
SH: I hate you
7:09 PM · Apr 3, 2018·Twitter Web Client

Reddit—Dadjokes
Posted by u/Riverrat423 October 2, 2019
Which restaurant serves the best roasted duck?
Quacker Barrel!
 
Reddit—Dadjokes
Posted by u/scardeal October 18, 2019
What’s a duck’s favorite restaurant?
Quacker Barrel!
 
Reddit—Dadjokes
Posted by u/abhive June 16, 2021
Where do ducks go for breakfast? 🦆
At the Quacker Barrel!