This is an excerpt from Two Fifteenth-Century Cookery-Books
The original source can be found at the University of Michigan's "Corpus of Middle English Prose and Verse"
xxxij - Auter brawn en peuerade. Take myghty brothe of Beef or of Capoun, an thenne take clene Freysshe Brawn, an sethe it, but not y-now; An 3if it be Freysshe Brawn, roste it, but not I-now, an than leche it in pecys, an caste it to the brothe. An thanne take hoole Oynonys, and pylle hem, an thanne take Vynegre ther-to, and Canelle, and sette it on the fyre, an draw yt thorw a straynoure, and caste ther-to; then take Clowys, Maces, an powder Pepyr, an caste ther-to, and a lytil Saunderys, an sette it on the fyre, an let boyle tylle the Oynonys an the Brawn ben euyne sothyn, an nowt to moche; than take lykoure y-mad of Bred an Vinegre an Wyne, an sesyn it vp, an caste ther-to Saffroun to make the coloure bryth, an Salt, an serue it forth.
Other versions of this recipe:
Brawne in peuard (Two Fifteenth-Century Cookery-Books)
Brawn en Peuerade (Two Fifteenth-Century Cookery-Books)