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Deviled Eggs

Deviled eggs are hard‑boiled eggs filled with a seasoned yolk mixture.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Deviled Eggs

Ingredients

Directions

  1. Cut the hard‑boiled eggs in half and remove the yolks.

  2. In a bowl, combine the yolks with pepper, salt, onion, mustard, and vinegar. Mix until smooth and return the mixture to the egg whites.

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 + mustardtop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

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

  2. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Pepper + mustardtop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

  4. Pepper + oniontop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

  5. Onion + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together18,226 recipes

    Shared aroma: acetic acid (sour, vinegar).

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

What each ingredient does

Eggs
Provide the structure of the dish, with yolks blended into a filling and whites serving as the holder.
Mustard
Adds sharp, pungent flavor that balances the richness of the yolks.
Vinegar
Adds acidity that brightens the rich, creamy yolk filling.
Onion
Adds a sharp aromatic bite to the yolk filling.

The step that matters

Mix until smooth. Mixing the yolks thoroughly with the other ingredients breaks them into a fine, even paste. Lumps left in the filling make it grainy and uneven in texture and flavor.

Swap the onion

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

  1. Horseradishfits better
  2. Capsicumfits better
  3. Shallotfits better
  4. Onionthe original

Fit is the average pairing score against egg, pepper, mustard, vinegar. 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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