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Dr. Doerknave's Buttermilk

A homemade buttermilk made by churning milk until butter separates.

From an old cookbook · modernised transcription
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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 ↓

Dr. Doerknave's Buttermilk

Ingredients

Directions

  1. Milk a cow into a small churn.

  2. Let it stand for about 10 minutes.

  3. Begin churning until butter flakes swim thick and the milk appears thin and blue.

  4. Strain through a sieve and drink frequently.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked 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

Milk
Its fat clumps into butter flakes during churning, leaving a thin liquid behind.

The step that matters

Churning until butter flakes form. Agitation breaks the milk's fat globules so they clump together as butter, while the watery liquid separates out. Stopping too early leaves the milk unseparated, and churning too long can make the butter grainy.

“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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