Is e631 (disodium inosinate) vegan?

? Ambiguous
It depends: e631 (disodium inosinate) can be plant- or animal-derived depending on the manufacturer. Meat, fish… or tapioca fermentation.

Where does it come from?

Meat, fish… or tapioca fermentation. The flavor enhancer in chips and instant soups, often paired with E627. Animal origin is common.

Vegan alternatives
Nutritional yeast, dried mushrooms

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