This is an excerpt from Le Menagier de Paris
(France, 1393 - Janet Hinson, trans.)
The original source can be found at
David Friedman's website
Cow's Udders. Cooked with meat and eaten like meat. .
Item, salted with mustard sauce. .
Item, sometimes cut in strips and roasted on the grill, cooked fresh.
Other versions of this recipe:
Cow's udder (Ouverture de Cuisine)