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Stewed Onions

Stewed onions cooked in butter, salt, milk, and white pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Stewed Onions

Ingredients

Directions

Prepare

  1. Peel the onions under cold water.

Cook the onions

  1. Cook the onions in boiling water for 45 to 60 minutes, changing the water after 6 minutes and again after 10 minutes.

  2. Do not cover the kettle while boiling.

Finish and serve

  1. Drain the onions and serve with 1 cup of white sauce, or add milk, butter, and pepper, cooking for 15 minutes before serving.

  2. Just before serving, add salt.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  3. Onion + milktop 20% of all pairs
    Smell alikemoderate
    Cooked together13,418 recipes

    Shared aroma: hexanal (green, grassy).

  4. Butter + white peppertop 28% of all pairs
    Smell alikelow
    Cooked together3,814 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  5. Onion + white peppertop 28% of all pairs
    Smell alikelow
    Cooked together2,395 recipes

    Shared aroma: 2-methylbutyraldehyde (malty, chocolate).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Onions
Long gentle cooking softens the onions and mellows their sharp flavour into sweetness.
Butter
Adds fat for richness and a smooth, rounded mouthfeel.
Milk
Adds liquid and creaminess to the finished dish.

The step that matters

Changing the water during boiling. Replacing the cooking water at set intervals carries away sharp, sulfurous compounds released by the onions. Leaving the water in place lets these harsh flavours linger, and an uncovered pot lets some of the volatile compounds escape rather than being reabsorbed.

Swap the white pepper

How well each one fits the dish's main ingredients (butter, onion, milk):

  1. Garlicfits better
  2. Cinnamonfits better
  3. Thymefits better
  4. White pepperthe original

Fit is the average pairing score against butter, onion, milk. Candidates are from the same food group and used in at least 100 recipes.

“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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