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Rice Soup

A simple soup made with beef stock, onion, rice, canned tomatoes, salt, and pepper.

From an old cookbook · modernised transcription
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Why it works: Rice and tomato 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 ↓

Rice Soup

Ingredients

Directions

The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

  1. In a large pot, bring the beef stock to a boil.

  2. Add the chopped onion and rice, and stir well.

  3. Add the canned tomatoes and season with salt and pepper.

  4. Simmer until the rice is tender, about 20-25 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. Rice + tomatotop 6% of all pairs
    Smell alikestrong
    Cooked together3,065 recipes

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

  2. Beef + oniontop 7% of all pairs
    Smell alikemoderate
    Cooked together17,092 recipes

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

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

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

  4. Beef + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together5,448 recipes

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

  5. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 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

Beef stock
Forms the liquid base and supplies most of the soup's moisture and savory flavor.
Rice
Absorbs liquid as it cooks, softening and adding body to the soup.
Onion
Adds aromatic sweetness and savory depth as it softens in the broth.
Canned tomatoes
Contribute acidity, color and extra moisture to balance the rich stock.

The step that matters

Simmer until the rice is tender. Rice keeps absorbing liquid and softening while it simmers, so it can turn mushy if cooked too long. Checking for tenderness near the lower end of the time keeps the grains intact and the soup's texture pleasant.

Swap the onion

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

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

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