Some of the local names include: katık in Turkey, qatıq in Azerbaijan, qatiq in Uzbekistan, ҡатыҡ in Bashkortostan, қатық in Kazakhstan and Tajikistan, катык or айран in Kyrgyzstan, катык in Tatarstan, gatyk in Turkmenistan. It is known as къатыкъ among the Crimean Tatars and as қатиқ among the Uyghurs. In Bulgaria, катък is not a drink, but a spread that has the consistency of mayonnaise.
In order to obtain qatiq, boiled milk is fermented for 6-10 hours in a warm place. Sometimes red beets or cherries are used for coloring. The drink may be kept in a cool place for two or three days. If stored longer, the drink will turn sour; it may still be added to high-fat soups, though. The chalop soup is made from qatiq in Uzbekistan.
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- Harlan Walker (1990). Oxford Symposium on Food & Cookery, 1989: Staple Foods : Proceedings. Oxford Symposium. pp. 219–. ISBN 978-0-907325-44-4.
- Bradley Mayhew; Greg Bloom; Paul Clammer; Michael Kohn (2010). Central Asia. Lonely Planet. pp. 87–. ISBN 978-1-74179-148-8.