What country did the word yogurt come from?

The Word is derived fromTurkish yoğurt, and is related to yoğurmak 'to knead' and yoğun 'dense' or 'thick' so answer is Turkey
Ancient Indian records list a form of yoghurt some 500 years BC and was known as the 'food of the Gods' It is also mentioned in 11th century Turkish texts and this may be considered to the origin.