Skyr (pronounced “skeer”) is an Icelandic dairy product with a texture and taste like very thick yogurt. It has a rich and creamy texture similar to Greek yogurt. Many people outside of Iceland refer to it as Icelandic Greek yogurt, but it is a type of cheese rather than yogurt, somewhat like ricotta or mascarpone.
Like Greek yogurt, skyr has a slightly sour taste. However, it's much milder in flavor, so most people find it more enjoyable to eat.