Cheese was made from goat and sheep milk as well as cow milk. Skyr, a soft yogurt-like cheese eaten with spoons, was originally a tradition brought to Iceland from Norway. It has survived only in Iceland. The whey left over when making skyr was made to go sour and used for storing meat. It is likely that the predominance of skyr in Icelandic cuisine caused the disappearance of other cheesemaking traditions in the modern era, until industrial cheesemaking started in the first half of the 20th century. Cheesemaking was part of seter-farming ("seljabúskapur"), living in mountain huts in the highlands in late spring. Here farmers could separate the kids/lambs from their mothers in order to milk the adults. They often made cheese while still in the highlands. Flavors would reflect the new grasses.