Can we make isoglosses?

[Bernd]

It would be interesting to have a look at this Austrian cooking book from the early 15th century made by the Dorotheerkloster in Vienna which is in the Österreichische Nationlbibliothek.
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It appears to be largely identical to the recipe collection of the  Berliner Codex mgq 1187 but with spelling variations and there's an excellent thesis about it here:
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Milk is written as 'milich' in the Berliner Codex and 'milch' in the Dorotheer Kochbuch, I found nothing about goats. There are also a lot of 'so nim' phrases in these cooking books.

Also this:
M I 128: Medizinische-naturwissenschaftliche Sammelhandschrift, early 15th century, Universitätsbibliothek Salzburg
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Milk is both spelled "milch" and "milich" but never without "L".
Here is a medicinal recipe containing goat milk spelled "gais milch" split over 2 lines.
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