Can we make isoglosses?

[Bernd]

Very nice finds!
Once again we see the VM is less 'alien' than it seems at first glance.

'gaisserin' is weird but could be read as a female form of 'gais' so a female goat.  Like 'Senner' -> alpine dairyman / 'Sennerin' ->  alpine dairywoman. Still unusual because it should be rather obvious the milk comes from the female. Never heard about 'gaisserin' before, it's usually just gais and gaisbock/pock for the male but that means nothing.

Overall the question remains how 'milch'/'milich' became 'mich' which is highly unusual and if it is really the same thing, see 'gaismich gens'. I do think goat milk makes the most sense but we have to acknowledge that very strange and non-uniform spelling was quite common back then.