Source dependent

The source or production method of concentrated white grape juice can vary, so it is not always vegan.

Names you may see on a label

succo d'uva bianca concentratojus de raisin blanc concentrézumo de uva blanca concentradovaalea rypälemehutiivistejugo de uva blanca concentradowhite grape juice concentrate

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.