Whey has been known for decades as a product of high nutritional value. Today, the development of markets using whey powder and fractions of whey as ingredients in foodstuffs for human and animal consumption have transformed the previously troublesome by-product whey into a valuable product for the dairy and cheese-making industries.
Sweet whey. This is also termed cheese whey and is produced during cheese-making, when rennet is used. Sweet whey forms a very large family of products. Their compositions may vary only slightly but their properties are very different.