Is puede contener proteína de leche vegan?

"Puede contener proteína de leche" is a Spanish phrase found on food labels that translates to "may contain milk protein" in English. Rather than naming a deliberate recipe component, this statement is an allergen advisory warning indicating that dairy proteins could be present in the finished product due to cross-contact or shared manufacturing equipment. Packaged baked goods, chocolates, chips, cereal bars, and processed snacks frequently display this note.

Milk protein comes exclusively from animals, usually cows, sheep, or goats. It is produced by isolating proteins such as casein and whey from animal milk during industrial dairy processing and cheese manufacturing. Because milk protein is entirely animal-derived, items bearing this label statement receive a verdict of not vegan. Even though the protein is not an intentional recipe ingredient, its potential presence means the item is not free from animal byproducts.