whey

He adds: "When I started my career, people used to talk about whey protein just as a supplement to your diet. Now the number of companies putting protein on anything and everything is insane."

But whey remains one of the largest sources of food loss and waste in Australia's large dairy sector.

Rennet, an enzyme naturally present in the stomachs of ruminants, would prompt the milk to coagulate, separating into curds and whey, thus laying the groundwork for modern cheese production.

Unlike with yogurt, another fermented dairy product, cheesemakers remove whey – which is water – to make cheese.

Vulto employees reportedly didn’t wash their lower or upper arms before submerging them in whey to stir and break up fresh cheese curds.