Greek yogurt
is a yogurt that has been strained to remove most of its whey, resulting
in a thicker consistency than unstrained yogurt, while preserving
yogurt's distinctive sour taste. Like many types of yogurt, strained
yogurt is often made from milk that has been enriched by boiling off
some of its water content, or by adding extra butterfat and powdered
milk. In Europe and North America, it is often made with low-fat or
fat-free yogurt. In Iceland a similar product named skyr is produced.