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Vegetable Omelet

A savory omelet made with onion, lettuce or parsley, green pepper, salt, eggs, and cream.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Onion and lettuce match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 3,562 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Vegetable Omelet

Ingredients

Directions

Prepare

  1. Chop the onion, lettuce or parsley, and green pepper finely, then add salt.

  2. Mix the chopped vegetables with the beaten eggs and cream.

Cook and serve

  1. Cook the mixture in a double boiler for 30 minutes.

  2. Serve hot.

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 + lettucetop 8% of all pairs
    Smell alikestrong
    Cooked together3,562 recipes

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

  2. Lettuce + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together4,037 recipes

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

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

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

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

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

  5. Pepper + creamtop 23% of all pairs
    Smell alikelow
    Cooked together21,449 recipes

    Shared aroma: acetic acid (sour, vinegar).

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

Eggs
Set when heated to form the body of the omelet.
Cream
Adds moisture and a softer, more tender texture to the eggs.
Onion
Adds savory aroma and mild sweetness as it cooks.

The step that matters

Cook the mixture in a double boiler. Gentle, indirect heat lets the egg proteins set slowly and evenly. Higher heat tightens them quickly, which makes the omelet rubbery and can leave it dry.

Swap the lettuce

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

  1. Spinachfits better
  2. Potatofits better
  3. Chivefits better
  4. Lettucethe original

Fit is the average pairing score against onion, pepper, egg, 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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