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Delicate Onions

A sautéed onion dish finished with beaten eggs and butter.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Onion and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Delicate Onions

Ingredients

Directions

Prepare the onions

  1. Slice the onions and place them in a pot with cold water, salt, and baking soda.

  2. Bring to a boil, then drain the water.

  3. Add hot water and a little more salt, and stew until tender.

  4. Drain the onions in a colander in a warm place.

Cook the omelette

  1. In a pan, melt 1 teaspoon of butter, then add the drained onions.

  2. When hot, add 1 tablespoon of butter and the beaten eggs.

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. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

    Shared aroma: decanal (soap, orange peel).

  3. Onion + eggtop 34% of all pairs
    Smell alikelow
    Cooked together23,333 recipes

    Shared aroma: 2,4-decadienal (seaweed).

Onion and egg barely smell alike, yet cooks put them together in 23,333 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

Onions
Form the bulk of the dish and, once stewed until tender, give it a soft, sweet body.
Eggs
Set when cooked, binding the onions into a soft omelette.
Baking soda
Raises the pot's alkalinity, helping the onions soften faster and stay tender during stewing.
Butter
Adds richness and helps the onions and eggs brown and taste rich in the pan.

The step that matters

Stewing the onions until tender. Onions must be fully softened before the eggs go in. Undercooked onions stay firm and sharp, and the omelette will not hold a pleasant texture. Draining well first keeps excess water from making the eggs watery.

Swap the onion

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

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

Fit is the average pairing score against butter, 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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