Kosher all year around
Description: Sodium tartrates (i) Monosodium tartrate (ii) Disodium tartrate (antioxidant)
Function: antioxidant
Rationale:
Sodium tartrates derive from the same non-kosher-wine tartaric acid sourcing concern as E334. [Merge override: OU halacha-yomis ruling on refined tartaric acid/cream of tartar applies to the whole tartrate family, not just E336/E337.]
If you don't see a status above, it does not mean the additive is not kosher automatically - it might just not be documented in our database yet.