Whey protein is a high-quality protein derived from whey, the liquid remaining after milk has been curdled and strained. To produce whey protein as a food additive, the whey undergoes a series of processing steps, including pasteurization, filtration, and drying. These processes concentrate the protein content and remove most of the lactose, fat, and other impurities, resulting in a powdered form of whey protein that is rich in essential amino acids. It is commonly utilized as a dietary supplement and functional food ingredient, particularly in sports nutrition products, protein bars, and meal replacements. Its versatility and nutritional benefits have made it a popular choice for individuals seeking to increase their protein intake and support muscle recovery and growth.