Feta cheese and goat cheese are both made from the milk of goats. The difference is that feta is also made using sheep's milk. In fact the majority, or 70 percent, of the milk used in feta is sheep's milk. Some feta is made entirely with sheep's milk.
Feta cheese, which originated in Greece, is brined, and this process is what gives feta its consistency and tangy, sharp flavor. Goat cheese, which originated in the Mediterranean and quickly spread to France and Spain, has a tangy flavor that is much stronger than feta. Goat cheese is prized for the original and varying flavors that can be produced by farms in different regions. The best goat cheeses come from small rural farms.