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 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