Not vegan

natural fish flavouring is classified as animal-derived by the local ingredient taxonomy.

Names you may see on a label

aroma naturale di pescenatürliches Fischaromaluontainen kala-aromiarôme naturel de poissonnatürliches Fisch-Aroma

How to verify it

If this ingredient appears in the recipe rather than a precautionary trace statement, the product is not vegan.