Source dependent

The source or production method of inedible crust can vary, so it is not always vegan.

Names you may see on a label

croûte non comestiblekorst niet eetbaarUnessabare KrusteCrosta non commestibilecroûte non consommable

How to verify it

Look for a vegan certification or a manufacturer statement identifying the original source. The ingredient name alone does not settle it.