You would think that wine would be vegan. I mean, it is only fermented grapes right? Unfortunately, this is not the case; wines can contain blood and marrow, casein, shells, egg white albumin, fish oil, gelatin, or isinglass and they do not need to be put the ingredients on the label. These ingredients are used to remove protein, yeast cloudiness, flavors, coloring, and particles that cloud the wine making it visually unappealing. This process is called fining and is used to give a silky, consistent mouth feel. Luckily using animal products is expensive, so some wine makers do not use them. A wine maker can use bentonite, activated charcoal, or diatomaceous earth instead of animal-derived products.
Mauro talks to Lee Hall about how to protect sturgeon from pollution, caviar, and using swim bladders to filter beer, wine and other alcoholic beverages.
Do you have a favorite wine?
Podcast: Subscribe in iTunes