Kasseri is a medium-hard or hard pale yellow cheese made from pasteurised or unpasteurized sheep milk and at most 20%, goat's milk. "Kasseri" is a protected designation of origin according to which the cheese must be made in the Greek provinces of Thessaly, Macedonia, Lesvos, and Xanthi.
Kasseri is the 21st most popular cheese in the world according to TasteAtlas.com.