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Cereals and bread from Czech Republic

Kyselo (Krkonoše sourdough mushroom soup)kyselo

Kyselo is a sour soup from the Krkonoše mountains made with bread sourdough (kvásek). The sourdough is thinned with lukewarm water and left for several hours or overnight to sour further, then simmered into a broth of mushrooms, caraway and potatoes, finished with fried onion and served with eggs.

A short entry: the sources we found record only what is said here about Kyselo itself.

Short entryCereals and bread30 min

Recipe

Amounts from a sourceAmounts are a home recipe published on CzechTourism's Kudy z nudy site; family versions vary.
Bread sourdough (chlebový kvásek)120 g[czechtourism]
Butter or lard40 g[czechtourism]
Dried mushroomsA handful[czechtourism]
Potatoes300 g[czechtourism]
Onion1 medium[czechtourism]
Water900 ml[czechtourism]
Milk200 ml[czechtourism]
Eggs2–4[czechtourism]
Salt and caraway[czechtourism]
Starterbread sourdough (chlebový kvásek)

Total time across the recorded steps: 30 min

Start
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SugarsLactic acid

What changes: Bread sourdough thinned with warm water is left to sour overnight

Step 1 of 4
Thin the sourdough with lukewarm water and leave it to sour
Time
Several hours, best overnight
Reported
Temperature
Not documented
Salt
None given
Acidity
Not documented

Output: sour sourdough liquid.

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

Kyselo is a sour soup from the Krkonoše mountains made with bread sourdough (kvásek). The sourdough is thinned with lukewarm water and left for several hours or overnight to sour further, then simmered into a broth of mushrooms, caraway and potatoes, finished with fried onion and served with eggs. Made in 4 steps over 30 min. The longest step, add the soured sourdough and simmer; stir in fried onion, takes 30 min (Novinky.cz).

Key numbers
Main step30 minReported[novinky]Add the soured sourdough and simmer; stir in fried onion

What makes this one different

Kyselo uses ordinary bread sourdough, thinned with water, rather than a dedicated żur or bran starter, and adds mushrooms, potatoes and eggs.

Related ferments

Variants

  • Baker's sourdough or dried starterOne recipe uses paste sourdough bought from a baker; dried starter must be soaked at least an hour ahead, ideally a day.

Safety

The sour liquid is simmered in the soup. In one recipe raw eggs are stirred into the fried onion so that they stay partly raw, then stirred into the soup and boiled only briefly (Novinky). The CzechTourism recipe serves runny scrambled or poached eggs. The FDA says to cook eggs until both yolk and white are firm, and that scrambled eggs should not be runny, to prevent illness from bacteria.

History and sources

Every number is labelled with how it is known. How this atlas is made

Kudy z nudy lists kyselo among the traditional dishes of the Krkonoše, where housewives made do with plain foods. It says a saying held that people got up with kyselo and went to bed with kyselo.

  1. [czechtourism] CzechTourism, Kudy z nudy, Ochutnejte tradiční krkonošské pokrmy (recipe for kyselo)web
  2. [novinky] Novinky.cz, Tradiční recepty z Krkonoš (kyselo recipe)web
  3. [fda-eggs] US Food and Drug Administration, What You Need to Know About Egg Safetygov