Whey is the lemon of cheese production. Cabot Creamery leveraged modern technology to turn it into lemonade
Whey protein concentrate (WPC) is a good example. The bulk of raw milk used in cheesemaking ends up as whey, and the cost of disposing of whey has driven some cheesemakers out of business. European dairy processors have been converting whey into WPC for years, and their American counterparts rapidly are following suit as food formulators find new uses for this ingredient.