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"
viij - Venyson with Furmenty. Take whete and pyke it clene, and do it in a morter, an caste a lytel water ther-on; an stampe with a pestel tyl it hole (Note: Hull, lose the husks); than fan owt the holys, (Note: Hulls; husks) an put it in a potte, an let sethe tyl it breke; than set yt douun, an sone after set it ouer the fyre, an stere it wyl; an whan thow hast sothyn it wyl, put ther-inne swete mylke, an sethe it y-fere, an stere it wyl; and whan it is y-now, coloure it wyth safron, an salt it euene, and dresse it forth, and thin venyson in a-nother dyshe with fayre hot water.
Other versions of this recipe:
Furmenty with venyson (Two Fifteenth-Century Cookery-Books)