What are white spots in my Jamón?
These small chalky white dots on the jamón ibérico are the result of the crystallization of an amino acid called tyrosine. It is the result of natural, artisanal, and traditional curing and it is a sign of the quality and the excellence of the product. Your Jamon is perfectly good to consume.
Full article: https://www.ibericoclub.com/what-are-the-white-spots-on-your-acorn-fed-iberico-ham-tyrosine/