It would appear that what is considered to be the correct pronunciation is dependent on what area of the world you happen to be in. A quick Google search will result in pronunciations like "ZAH-tah", "za-taar", or "ZAH'taarrrr" (roll that r!) and in some cases, the name of this popular spice blend has three syllables and is pronounced za-ah-tar. For the record, we say ZAH-tar.