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Qatiq is a thick Turkic soured milk, firmer than ayran, made by keeping boiled milk warm for 6–10 hours. Kazakhstan's old standard ST RK 230-87 defined katyk as milk pasteurised at a high temperature with a long hold (baked) and soured with the Bulgarian bacillus, thermophilic streptococci and kefir starter.
A short entry: the sources we found record only what is said here about Qatiq / katyk itself.
Short entryFermented milk6 h – 10 h
Recipe
No fixed amounts recordedHousehold practice with no fixed amounts. The Kazakh standard set fat levels (1.0, 2.5 and 3.2 %, and fat-free), not a recipe.
Cow's milk
Boiled; pasteurised hot with a long hold in the Kazakh standard[wp][strk230]
Starter
In the Kazakh standard, pure cultures of the Bulgarian bacillus and thermophilic streptococci plus kefir starter[strk230]
Starter
pure cultures of the Bulgarian bacillus and thermophilic streptococci plus kefir starter in the Kazakh standard
Total time across the recorded steps: 6 h – 10 h
Start
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What changes:The milk is boiled before the starter goes in
Step 1 of 3
Boil the milk
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactic acid bacteria
L. delbrueckii
The Kazakh standard called for high-temperature pasteurisation with a long hold (toplenie), as for baked milk. Output: hot boiled milk.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
Qatiq is a thick Turkic soured milk, firmer than ayran, made by keeping boiled milk warm for 6–10 hours. Kazakhstan's old standard ST RK 230-87 defined katyk as milk pasteurised at a high temperature with a long hold (baked) and soured with the Bulgarian bacillus, thermophilic streptococci and kefir starter. Made in 3 steps over 6 h – 10 h. The longest step, keep the boiled milk warm, takes 6–10 h (Wikipedia 1997). Lactobacillus delbrueckii subsp. bulgaricus and thermophilic streptococci and Kefir starter culture do most of the fermenting.