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.