A notebook of Buitzruss, who studied at Heidelberg in the early fifteenth century, illustrates the practical outlook of the city's academic community. Among the varieties of texts preserved in Conrad's collection is a cookbook that has gone unnoticed thus far by scholars of European food history. This set of culinary recipes appears in the midst of general rules about health, ritual magic, and other practically oriented texts taken down by Buitzruss and form a very interesting part of manuscript Clm 671. Any literate reader would gain valuable knowledge for life in a late-medieval urban environment.

In his book Understanding the Middle Ages, Harald Kleinschmidt analyzes visual art and legal documents to trace the development of medieval self-perception and its relationship to action. He describes the growing use of literacy as:

The power of oral communication to maintain kin groups was supplemented and then replaced by privileging literacy within urban groups, such as the academic community which the student Conrad Buitzruss inhabited at Heidelberg. Incidentally, Kleinschmidt saw the rise of the universities as a further step in the Church's monopolization of knowledge and viewed the written word as its main instrument of power.