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Tykmælk is Danish thick sour milk. One home recipe sets whole milk with a little buttermilk, covered somewhere warm, in 24 hours; dairies now sour pasteurised milk with a lactic culture, and one adds an acidophilus culture too.
A short entry: the sources we found record only what is said here about Tykmælk itself.
DocumentedFermented milk24 h
Recipe
Amounts from a sourceA home recipe from a Danish food site; dairies use a pure culture instead of buttermilk.
other: buttermilk (home recipe); a lactic culture plus L. acidophilus (one dairy)
Total time across the recorded steps: 24 h
Start
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What changes:The dairy high-pasteurises the whole milk
Step 1 of 4
Heat or high-pasteurise the milk (dairy)
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactic acid bacteria
L. acidophilus
Output: pasteurised whole milk.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
heat kills the milk's own bacteria
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
Tykmælk is Danish thick sour milk. One home recipe sets whole milk with a little buttermilk, covered somewhere warm, in 24 hours; dairies now sour pasteurised milk with a lactic culture, and one adds an acidophilus culture too. Made in 4 steps over 24 h. The longest step, leave to sour and set, takes 24 h (Nielsen K) and runs at 15–30 °C (Kastrup C.B. (Mejeriforeningen 2019). Mesophilic lactic acid bacteria, the same culture used for kærnemælk, ymer and crème fraîche and Lactobacillus acidophilus do most of the fermenting.