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Onions and Tomatoes

From an old cookbook · modernised transcription
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Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Onions and Tomatoes

Ingredients

Directions

  1. Slice off the tops of the tomatoes and scoop out some pulp.

  2. Steam the onions until tender and scoop out a hollow in each.

  3. Fill the hollow of each onion with a tomato, adding a piece of butter and an egg.

  4. Sprinkle with salt and pepper, add a bit more butter, and replace the tomato top.

  5. Cover with the onion top, place in a greased bag, and cook for 15 minutes.

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. Tomato + peppertop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

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

  2. Tomato + oniontop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 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 + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

    Shared aroma: decanal (soap, orange peel).

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

Swap the tomato

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

  1. Chivefits better
  2. Potatofits better
  3. Capsicumfits better
  4. Tomatothe original

Fit is the average pairing score against onion, butter, egg, pepper. Candidates are from the same food group and used in at least 100 recipes.

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