Skyr is an Icelandic dairy product.  I've heard it compared to yogurts and cheeses.  It has a consistency close to Greek Yogurt, but the flavor is different.  I find it in grocery stores in the United States.  I am fond of a brand called Siggi's.  They make it in the USA but say they base it on Scandinavian dairy traditions.  I tend to prefer the flavors when they have a higher fat content.  Also, I prefer to have it with something, for example on crackers.