From their website (http://www.altosalvador.com/en/suitable-vegan/, retrieved January 2021)
"Our winery performs static clarifications without using egg albumin, casein (protein derived from milk), gelatin (which is obtained from animal cartilage, almost always from fish) or the socalled ichthychola (which is obtained from the swim bladder of some fish), using only tangential filtering for all varietals."
Alto Salvador Wines
Vegan
This product is listed as vegan friendly.
What the company told us
Correspondence on record, with the date of each entry.