Skip to main content
Main

French Tomato Soup

A tomato soup made with tomatoes, water, milk, butter, onion, and seasonings, simmered and served hot.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
Jump to recipe ↓

Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

French Tomato Soup

Ingredients

Directions

Make the soup

  1. Combine tomatoes and minced onion in a pot with boiling water.

  2. Cook over medium heat and then strain through a colander.

  3. In a separate pot, boil the milk, then stir in baking soda and butter; keep hot.

  4. Add the strained tomato mixture to the milk, along with pepper and salt, and simmer for 5 minutes.

Serve

  1. Serve immediately.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

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

  5. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Milk
Forms the creamy base of the soup and mellows the tomato acidity.
Baking soda
Neutralizes tomato acid so the hot milk is less likely to curdle.
Tomatoes
Provide the main body, sweet-sour flavor and liquid of the soup.
Butter
Adds fat for a smoother, richer mouthfeel.

The step that matters

Adding the tomato mixture to the milk. Tomato is acidic and hot milk contains proteins that can clump or curdle when they meet acid. Keeping the milk hot, with baking soda already stirred in to reduce acidity, and adding the tomatoes gradually and steadily helps keep the soup smooth.

Swap the onion

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

  1. Capsicumfits better
  2. Potatofits better
  3. Carrotfits about as well
  4. Onionthe original

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

You might also like

Tomato SoupTomato Soup526 recipesCream of Tomato SoupCream of Tomato Soup107 recipesTomato BisqueTomato Bisque61 recipesCream Tomato SoupCream Tomato Soup28 recipes