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Clear Tomato Soup

A light tomato soup made with tomatoes, onion, water, and vermicelli, seasoned with pepper 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 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 ↓

Clear Tomato Soup

Ingredients

Directions

  1. Boil the tomatoes, onion, and water for 5 to 10 minutes.

  2. Drain all the liquid and return the mixture to the saucepan.

  3. Season with pepper and salt, then sprinkle in the vermicelli.

  4. Cook until the vermicelli is soft, then serve.

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).

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

What each ingredient does

Tomatoes
Provide the main flavour and body of the soup as they break down in the liquid.
Onion
Adds savoury sweetness and aroma as it softens and flavours the broth.
Vermicelli
Thickens the soup slightly and adds a starchy, tender texture as it cooks soft.

The step that matters

Drain all the liquid and return the mixture to the saucepan. Removing the liquid leaves the cooked solids behind, so the soup is clear rather than cloudy. Returning the solids then lets the remaining liquid be seasoned and finished properly.

Swap the onion

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

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

Fit is the average pairing score against 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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