In Switzerland and the Netherlands we use the milk whey to create a soft drink: http://en.wikipedia.org/wiki/Rivella http://en.wikipedia.org/wiki/Rivella Afaik

In Switzerland and the Netherlands we use the milk whey to create a soft drink: http://en.wikipedia.org/wiki/Rivella http://en.wikipedia.org/wiki/Rivella Afaik, it was indeed invented in order to find a use for this by-product. It tastes "a bit weird, but pretty good" (that's also their slogan, and it's quite accurate IMO :) )