The word is derived from Turkish yoğurt, and is related to yoğurmak ‘to knead’ and yoğun “dense” or “thick”. 
There is evidence of precultured milk products being produced as food for at least 4,500 years. The earliest yoghurts were probably spontaneously fermented by wild bacteria.The oldest writings mentioning yogurt are attributed to Pliny the Elder, who remarked that certain nomadic tribes knew how “to thicken the milk into a substance with an agreeable acidity”. The use of yoghurt by medieval Turks is recorded in the books Diwan Lughat al-Turk by Mahmud Kashgari and Kutadgu Bilig by Yusuf Has Hajib written in the 11th century. Both texts mention the word “yoghurt” in different sections and describe its use by nomadic Turks.
Yoğurt “Yogurt”
