What is hydrolysed (or hydrolyzed or pre-digested) whey protein?
Hydrolysed whey protein has been treated with enzymes to break the protein down into smaller peptides and amino acids. All hydrolysed protein tastes absolutely foul, very much like vomit. The very bitter taste comes from the high percentage of peptides and amino acids particularly arginine. The percentage of whey hydrolysed varies from 5% to 25%. The higher the percentage, the more amino acids are isolated and the more bitter it will taste, it is also the most expensive form of any whey protein.
