Taken from Wikipedia:
Ayran or dhalla is a yoghurt-based, salty drink popular in Albania, Bulgaria, Turkey, Azerbaijan, Iran, Pakistan, the Republic of Macedonia, Kazakhstan and Kyrgyzstan. It is made by mixing yoghurt with water and (sometimes) salt. The same drink is known as doogh in Iran; tan in Armenia; laban ayran in Syria and Lebanon; shenina in Iraq and Jordan; laban arbil inIraq; majjiga (Telugu), majjige (Kannada), and moru (Tamil and Malayalam) in South India; lassi in Punjab and all over Pakistan. A similar drink, doogh, is popular in the Middle East between Lebanon, Iran and Afghanistan; it differs from ayran by the addition of herbs, usually mint, and is sometimes carbonated, commonly with carbonated water.
... carbonated. ok there's things even I won't try.