Where does “soja” come from?

soja (Veps) comes 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.

soja (Veps): soya, soy

Definitions

soya, soy

Ancestry of “soja”, step by step

Step	Language	Word	Meaning
1	Russian	со́я	jay {{i\|dialectal}}
2	Dutch	soja	soy
3	Japanese	そい	醤油 soy sauce
4	Japanese	醤油	soy sauce
5	Middle Chinese	醬油	—
6	Middle Chinese	醬	bean paste

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