Humans have been making yoghurt for thousands of years! The process of yoghurt making reputedly originated in the warm climate of Mesopotamia - the present day Middle Eastern country of Iraq - when stored goat's and sheep's milk fermented naturally in the high summer temperatures. The mixture was then hung in animal skins to cool. A soft curd called 'jugurt' was formed. This is where the word 'yoghurt' comes from.