“Hock” is a British term for German white wine. Some puns have “add hock” instead of “ad hoc.”
 
“I didn’t have set people to specifically calculate how much German wine I own so I made an add Hock committee” was posted on Twitter by comedyfish on October 18, 2010. “Sometimes I like to experiment with German wine in my cooking. Sort of an add hock approach” was posted on Twitter by Thucky on February 28, 2012. “I like to put German wine in my cooking on an add hock basis” was posted on Twitter by T’Other Simon on June 13, 2012.
   
   
Wikipedia: Hock (wine)
Hock is a British term for German white wine; sometimes it refers to white wine from the Rhine region (specifically Riesling) and sometimes to all German white wine.
 
It is short for the obsolete word “hockamore”, which is an alteration of “Hochheimer”, derived from the name of the town of Hochheim am Main in Germany.
 
The term seems to have been in use in the 17th century, initially for white wines (predominantly Riesling) from the Rheingau, but in the 18th century it came to be used for any German white wine sold in Britain to convey some of the then very high prestige of Rheingau wine to (often much) lesser German wines.
     
Twitter
comedyfish
@comedyfish
I didn’t have set people to specifically calculate how much German wine I own so I made an add Hock committee
11:34 AM - 18 Oct 2010
   
Twitter
Mr Omega 3
@MrOmega3
I’ve got a soup recipe. “Just add some German wine” it says. That’s a bit too ‘add hock’ for my liking.
5:34 AM - 27 Sep 2011
   
Twitter
Thucky 👤
@Thuckster__
Sometimes I like to experiment with German wine in my cooking. Sort of an add hock approach.
3:55 AM - 28 Feb 2012
   
Twitter
T’Other Simon
@TOther_Simon
I like to put German wine in my cooking on an add hock basis.
5:33 AM - 13 Jun 2012
   
Twitter
NiGraber
@audiolympics
Will put cheap German wine into my cooking on an add Hock basis.
4:45 AM - 10 Jul 2013
   
Twitter
Dr N A Mallett (retired)
@gazpacholulu
I splash a little German wine into my cooking on an add hock basis
1:24 PM - 31 May 2018
   
Twitter
James Anderson 🏛
@tufnelljimmy
Replying to @tufnelljimmy @JohnMQC @simonburrows23
In fact when I put German wine in my cooking I always do so on an add Hock basis.
7:02 AM - 13 Aug 2018 from Attiki, Greece
 
Twitter
🤣 The Dad Joke Man 😉
@DadJokeMan
I like to add German wine into my cooking, I don’t do it all the time but only on an add Hock basis…
2:01 PM - 6 Dec 2018