What......Not all wines are Vegan?!?
Not all wines are vegan! What?!? The filtering process is what makes wines not vegan friendly. Between the use of egg whites and casein in mostly reds; which make for a clear wine by making proteins glob together and collect at the bottom of the tank. They also remove bitter-tasting phenolics. Whites, rosés and sparklings use isinglass which is a byproduct of fish.
Here's a list of elements that can be used in the refining process in most wines.
Albumen: which is derived from egg white
Albumin: from eggs or dried blood
Carmine: crushed scales of a cochineal insect
Casein: obtained from milk
Charcoal: often derived from animal bone
Chitin: derived from the shells of crabs or lobsters
Gelatine: from bones and connective tissues of cows or pigs
Honey: derived from bees
Isinglass: obtained from fish swim bladders
Lactose: protein derived from milk
Pepsin: a foaming agent in beer sometimes derived from pigs
Want to be safe=get wines that are unfiltered and you can be sure to avoid all these. Also you can check barnivore or email the company directly.