Why it works: Milk and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 77,875 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Koumiss or Kumys
Ingredients
Directions
Add the yeast and sugar to the bottle of milk.
Cork the bottle tightly and place it in the refrigerator.
Use patent bottles designed for lager beer.
The koumiss can be consumed in three days, but is best when aged four to eight days.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Milk + sugartop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Milk and sugar barely smell alike, yet cooks put them together in 77,875 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cow's milk
- Provides the liquid and lactose that the yeast ferments into alcohol and carbon dioxide.
- Yeast
- Ferments the milk sugars, producing the fizz and mild alcohol that define koumiss.
- Brown sugar or malt
- Feeds the yeast, speeding fermentation and adding a touch of sweetness.
The step that matters
Cork the bottle tightly. Fermentation produces carbon dioxide, which builds pressure in the sealed bottle. A tight cork keeps the gas dissolved for carbonation instead of letting it escape, and the bottle must be strong enough to hold that pressure safely.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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