What is
Feta cheese, a type of Greek cheese, is made from milk that is brined or pickled. The process of brining gives a tangy, salty and a crumbly consistency to feta cheese.
  
Clabber is a food produced by allowing unpasteurized milk to turn sour at a specific humidity and temperature. Over time, the milk thickens or curdles into a yogurt-like substance with a strong, sour flavor.