Robert Mondavi Wines is Not Vegan Friendly

Company email (February 2019)
"Due to the agricultural nature of wines our wine compositions and ingredient additions will change as each vintage year presents us with different challenges that we have to adapt to. Generally, we do not use animal products in our wines, however, we do not submit our products for any classification under the 'vegetarian' or 'vegan' title."

Company email (December 2018)
"Fining agents are used on a lot-by-lot basis to optimize the quality. Some fining agents contain proteinaceous materials... One of our standard fining agents contains Micronized potassium casseinate [casein is milk protein], food grade gelatin, egg albumin and other food grade components."

Company email (January 2016):
"One of our standard fining agents contains Micronized potassium casseinate [casein is milk protein], food grade gelatin, egg albumin and other food grade components."

Company email (November 2015):
"Fining agents are used on a lot-by-lot basis to optimize the quality. Some fining agents contain proteinaceous materials. Proteinaceous fining agents are used to react with color and/or tannin molecules to make them removable by subsequent filtration. Both the fining agent, the color and/or tannin it reacts with are removed by the filtration process.

"All of our fining agents are approved by the Alcohol & Tobacco Tax & Trade Bureau (TTB, formerly the Bureau of Alcohol, Tobacco and Firearms)

"One of our standard fining agents contains Micronized potassium casseinate [casein is milk protein], food grade gelatin, egg albumin and other food grade components."

Company email (Sept 13 2011):

"One of our standard fining agents contains Micronized potassium casseinate [casein is milk protein], food grade gelatin, egg albumin and other food grade components."

http://www.robertmondavi.com/WineFacts/whtWine.asp
http://www.robertmondavi.com/WineFacts/redWine.asp
"Some effective and natural fining agents include egg whites, milk protein, and isinglass (sturgeon bladder)."