Where does “ostronsås” come from?

ostronsås (Swedish) comes from Swedish sås, from French sauce, from Old French sause, from Vulgar Latin salsa, from Latin salsus, from Latin sāl, from Proto-Italic sāls, from Proto-Indo-European *sḗh₂l — salt.

ostronsås (Swedish): oyster sauce

Definitions

oyster sauce

Ancestry of “ostronsås”, step by step

ostronsås traces back through two separate lines of ancestry.

via Swedish sås

Step	Language	Word	Meaning
1	Swedish	sås	gravy; sauce; semen
2	French	sauce	sauce
3	Old French	sause	sauce (condiment)
4	Vulgar Latin	salsa	nominative feminine singular of salsus;...
5	Latin	salsus	salty, briny; salted; witty
6	Latin	sāl	salt
7	Proto-Italic	sāls	salt
8	Proto-Indo-European	*sḗh₂l	salt

via Swedish ostron

Step	Language	Word	Meaning
1	Swedish	ostron	oyster
2	Old Swedish	ostra	—
3	Latin	ostrea	oyster, mussel
4	Ancient Greek	ὄστρεον	bivalve; oyster; purple pigment, probably that...

Every word from Proto-Indo-European *sḗh₂l →Every word from Proto-Italic sāls →Every word from Latin sāl →