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Spanish Rice

A simple rice dish cooked with tomatoes, peppers, onion, butter, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Tomato and rice match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,065 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Spanish Rice

Ingredients

Directions

  1. Melt the butter over medium heat in a skillet.

  2. Fry the onion until light brown.

  3. Add the rice and enough water to cook it, along with the salt.

  4. Cook until the rice is nearly done, then add the peppers and tomatoes.

  5. Cook for an additional 30 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 + ricetop 6% of all pairs
    Smell alikestrong
    Cooked together3,065 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

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

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

  3. Tomato + oniontop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

  4. Rice + oniontop 9% of all pairs
    Smell alikemoderate
    Cooked together10,433 recipes

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

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

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

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

What each ingredient does

Rice
Forms the bulk of the dish and absorbs the cooking liquid as it becomes tender.
Tomatoes
Add moisture, acidity and flavour that colour and season the rice as it cooks.
Peppers
Add sweetness and body, softening as they cook down with the tomatoes.
Spanish onion
Browning in butter builds savoury sweetness that forms the base flavour.
Butter
Adds fat and richness, and helps the onion brown.

The step that matters

Frying the onion until light brown. Browning the onion in butter develops sweet, savoury flavour through the Maillard reaction. Pale onion gives a flatter taste, while over-browning can turn bitter.

Swap the onion

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

  1. Capsicumfits better
  2. Potatofits better
  3. Okrafits better
  4. Onionthe original

Fit is the average pairing score against tomato, rice, pepper, butter. 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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