Why is wine not vegan

Overview

Wine production often involves fining, a process to remove impurities like tannins, proteins, and yeast for clarity and stability. Historically, animal-derived agents have been used since ancient times; for example, Romans used egg whites in winemaking as early as the 1st century AD. In modern winemaking, this practice became standardized in the 19th century with the industrial-scale use of isinglass and gelatin. The issue gained attention in the 21st century as veganism grew, with a 2019 study by Wine Intelligence reporting that 12% of global consumers now seek vegan wines. Specific regions like France and Italy have long traditions of using animal products, while newer producers in countries like Australia and the U.S. are increasingly adopting vegan methods, with vegan wine sales increasing by 20% from 2015 to 2020 according to market research.

How It Works

Fining agents work by attracting and binding to unwanted particles in wine through electrostatic charges or adsorption. Animal-based agents like egg whites contain proteins that bind to tannins, reducing astringency; a typical dose is 2-8 egg whites per 225-liter barrel. Isinglass, with its positive charge, attracts negatively charged yeast cells and proteins, forming clumps that settle out. Casein, a milk protein, is added at rates of 0.5-2 grams per liter to remove phenolic compounds and haze in white wines. Gelatin, with a positive charge, binds to tannins and proteins, often used at 0.1-0.5 grams per liter. After addition, the wine is left to settle for days to weeks, then filtered or racked to remove the fining agents, though trace amounts may remain, which is why vegans avoid such wines. Vegan alternatives like bentonite clay (a negatively charged mineral) or plant proteins (e.g., from peas) work similarly but without animal derivatives.

Why It Matters

This matters because it affects dietary choices, health, and ethics for vegans, who avoid animal products for reasons like animal welfare, environmental concerns, or allergies. Non-vegan wines can exclude up to 8% of consumers in markets like the UK, where veganism rose by 40% from 2014 to 2019. It also impacts labeling and transparency; since 2012, EU regulations require allergen labeling for egg and milk residues in wine, but not for isinglass or gelatin, leading to confusion. Environmentally, vegan fining agents like bentonite have a lower carbon footprint, with studies showing a 15% reduction in emissions compared to animal-based methods. The trend toward vegan wines is driving innovation, with producers adopting clearer labeling and sustainable practices, enhancing market appeal and meeting growing consumer demand for ethical products.