I found another "poxleber"

[Koen G]

Anything can be written in VMS, but if I’m referring to goat’s liver, I should, in theory, write “bocksleber,” and if I’m referring to God’s liver, then “poxleber.”

But I could be wrong, and I don’t want to mislead anyone…

Kind of wrong, yeah.

Our earliest attestation of a spelling with "pox" is the use as the goat's liver.
And then after that, we get some attestations of "pox" as an alternative for "potz", which in turn is a minced oath for "Gott's". 

Something else about this: for the minced oath, we are comfortable accepting variations: box, potz. If we accept similar variations for the ingredient, which we could by virtue of the Kitzbühel text, we would have many more of those. 

In fact, since the curses include "boxleber", we must also include "NYm ein Pokchsleber" from this pre-1450 cookbook: You are not allowed to view links. Register or Login to view.