Where does “suomisyöjä” come from?

suomisyöjä (Finnish) comes from Finnish syöjä, from Proto-Finnic sooja, from Russian со́я, from Dutch soja, from Japanese そい, from Japanese 醤油, from Middle Chinese 醬油, from Middle Chinese 醬 — bean paste.

Ancestry of “suomisyöjä”, step by step

suomisyöjä traces back through two separate lines of ancestry.

via Finnish syöjä

Step	Language	Word	Meaning
1	Finnish	syöjä	eater
2	Proto-Finnic	sooja	shelter; protection; warm
3	Russian	со́я	jay {{i\|dialectal}}
4	Dutch	soja	soy
5	Japanese	そい	醤油 soy sauce
6	Japanese	醤油	soy sauce
7	Middle Chinese	醬油	—
8	Middle Chinese	醬	bean paste

via Finnish suomi

Step	Language	Word	Meaning
1	Finnish	suomi	The Finnish language; Third-person singular...
2	Proto-Finnic	soomi	person from Southwest Finland

Every word from Middle Chinese 醬 →Every word from Middle Chinese 醬油 →Every word from Japanese 醤油 →