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