Complex sentence: It is originally from the Antalya region of Turkey where it is prepared differently from other regions with other ingredients like sesame oil where it is not considered a salad but a main dish itself.
Split into simpler sentences: It is originally from the Antalya region of Turkey where it is prepared differently from other regions with other ingredients like sesame oil. In Antalya, piyaz is not considered a salad but a main dish itself.