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Onion Eggs

A dish of sliced hard‑boiled eggs served over fried onions, topped with grated eggs and cream.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 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 Eggs

Ingredients

Directions

Prepare the onions

  1. Slice 3 hard-boiled eggs, both white and yolk.

  2. Slice 3 onions and fry them in butter.

  3. Lay the fried onions on a platter.

Assemble and serve

  1. Place the sliced eggs over the onions and keep warm.

  2. Grate the remaining 3 hard-boiled eggs.

  3. Mix the grated eggs with a little salt and a pinch of cayenne pepper.

  4. Heat a little cream and pour it over the eggs and onions.

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. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

    Shared aroma: decanal (soap, orange peel).

  4. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Onion + creamtop 18% of all pairs
    Smell alikelow
    Cooked together10,827 recipes

    Shared aroma: 2-nonanone (fruity, floral).

Onion and cream barely smell alike, yet cooks put them together in 10,827 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

Hard-boiled eggs
Provide the main body of the dish, with sliced whites and yolks and grated egg adding texture.
Onions
Fried in butter until soft and sweet, they form the base layer under the eggs.
Butter
Fat used to fry the onions, adding richness and browning.
Cream
Adds moisture and richness when poured over the eggs and onions.

Swap the onion

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

  1. Potatofits better
  2. Spinachfits better
  3. Asparagusfits better
  4. Onionthe original

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