TL or Author, whoever it was that chose the word, 'emulsion' does not mean 'finely ground meat.' See
https://en.wiktionary.org/wiki/emulsion
The Japanese was probably a word for
https://en.wiktionary.org/wiki/forcemeat which I know the definition says 'emulsion' but it's properly a blend of solids and a resulting emulsion of juices and fats is only one component in the blend. For actual emulsions, see Mayonnaise and Vinaigrette.
@Coldyfox Thüringer sausage is similar to Italian sausage (by which I mean what we call Italian sausage in the US. I have no idea what they call it in Italy) and breakfast sausage (again, the stuff we call that in the US), in which it is either consumed immediately or it is cooked and kept for consumption within a couple weeks. It's not a food preservation style of sausage.
@Kaarme I cringed when I saw her telling that story, because that's the ending I knew. I've only encountered the story in Grimm.