True & Honest Fan
I would eat Sargons brain. It's already soft and mushy and has been marinated in red wine for years.
May I remind the dear niggers of Kiwifarms that sausages and pies and broths exist, and thus even cows that look way too fatty or gristly or bony can probably be broken down and minced/smoked/brined/boiled for stock/whatevered into some truly delicious manchildmeat
In my opinion your best bet would be really fatty ones like Amberlyn sincere there probably will be a lot of value in rendering the fat to use in preparing other lolcows, not to mention some very tender never exercised meat.
And the offal....my god the offal of her alone would be fucking priceless. Her liver is probably the size of a beachball and can be combined with some DSP Bacon to create a year supply of pate, her stomach can easily be used to make a haggis big enough to contain an entire minced and stewed DesmondIsAmazing, and her intestines are probably sufficient to create a literal thousand Moviebob sausages.
And dont even get me STARTED on how many fucking chiterlings her bloated fucking colon might be processed in to...