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Spinach Soup

A creamy soup made from boiled spinach, milk, butter, flour, salt, and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Spinach Soup

Why it works: Spinach and pepper are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,400 recipes. Both carry nonanal, which smells fat, citrus. The science ↓

Spinach Soup

Ingredients

Directions

Prepare the spinach

  1. Boil the spinach in salted water for 10 minutes.

  2. Drain and chop the spinach finely.

Make the soup

  1. Pass the chopped spinach through a strainer into boiling milk.

  2. Melt the butter in a pan, then add the flour and stir until smooth.

  3. Stir the butter and flour mixture into the soup.

  4. Season with salt and pepper to taste.

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.

Photo for illustrative purposes only · Contact us to use it

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. Spinach + peppertop 6% of all pairs
    Smell alikemoderate
    Cooked together3,400 recipes

    Shared aroma: nonanal (fat, citrus).

  2. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  3. Spinach + flourtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,564 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Spinach
Forms the body and green colour of the soup, with a mild vegetable flavour.
Milk
Makes up the liquid base and adds creaminess and richness to the soup.
Butter
Adds fat and richness, and carries flavour when cooked with the flour.
All-purpose flour
Thickens the soup when cooked in butter and stirred into the hot milk mixture.

The step that matters

Stirring the butter and flour into the soup. Flour clumps if it meets hot liquid without being cooked smooth in fat first, so the mixture should be fully blended before it goes in.

Swap the spinach

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

  1. Potatofits better
  2. Capsicumfits better
  3. Chivefits about as well
  4. Spinachthe original

Fit is the average pairing score against milk, butter, flour, 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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