I think what I love most about medieval cooking is looking at the different versions there are under the same nominal title. Forme of Curye is the 14th Century English manuscript and it has a couple of different versions as a result of being manually rewritten out and copied. That puts some slight variation differences depending on which text you happen to look at.
This recipes, Chyches or Chiches, has what seems like a minor issue but does create a difference in redacting it. And that is the placement of a comma or lackthereof between two words.