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Onion Souffle

A baked onion soufflé made with butter, flour, water, cream, cooked onion, egg yolks, and beaten egg whites.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Onion Souffle

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Make the base

  1. In a bowl, combine melted butter and flour.

  2. Gradually add the water and cream, mixing well.

  3. Stir in the sieved cooked onion.

  4. Beat the egg yolks and combine with the mixture.

Bake and serve

  1. Gently fold in the beaten egg whites.

  2. Pour into a buttered dish and bake at 350°F (175°C) for 25 minutes.

  3. Serve immediately.

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 + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: decanal (soap, orange peel).

  4. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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

Butter and flour
Form a roux that thickens the base and gives it body.
Egg whites
Trapped air in the beaten whites lifts the soufflé as it bakes.
Egg yolks
Enrich the base and help it set into a custard-like structure.
Cream
Adds richness and moisture to the base.
Cooked onion
Provides the main flavor and moisture of the soufflé.

The step that matters

Gently fold in the beaten egg whites. Folding gently keeps the air bubbles in the whites intact. Those bubbles expand in the oven and give the soufflé its rise, so overmixing deflates it.

Swap the onion

How well each one fits the dish's main ingredients (butter, flour, cream, egg):

  1. Leekfits better
  2. Chivefits better
  3. Asparagusfits better
  4. Onionthe original

Fit is the average pairing score against butter, flour, cream, egg. 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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