@davoloid @ninawillburger There's a very nice video about the preservation: https://youtu.be/PtEfKB8w9YY?si=EOwx3t7oxoupk1D_

The audio in only available in Dutch, but the pronuciation is so clear that I (native German speaker) could understand almost everthing despite not knowing Dutch.

And yes, they also used PEG for this one.