Skip to main content
Main

Swiss White Soup

A light broth-based soup thickened with eggs, flour, and milk, seasoned with salt and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
Jump to recipe ↓
Swiss White Soup

Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Swiss White Soup

enough for 6 servings

Ingredients

Directions

Prepare

  1. Boil the broth in a pot.

  2. In a bowl, beat the eggs well.

  3. Add the flour and milk to the eggs, mixing until smooth.

Finish the soup

  1. Gradually pour the egg mixture through a sieve into the boiling broth.

  2. 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. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Egg + milktop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

    Shared aroma: 2-nonenal (fatty, green).

  4. Flour + peppertop 19% of all pairs
    Smell alikemoderate
    Cooked together50,459 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Milk + peppertop 22% of all pairs
    Smell alikemoderate
    Cooked together26,984 recipes

    Shared aroma: ethyl 2-methylbutyrate (fruity, apple).

Flour and milk barely smell alike, yet cooks put them together in 78,219 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

Eggs
Thicken the broth when heated and form soft, silky strands in the soup.
Flour
Starch thickens the egg and milk mixture, giving the soup body and helping it stay smooth.
Milk
Adds moisture and richness, diluting the eggs so they set more gently.

The step that matters

Pouring the egg mixture into the boiling broth. Eggs curdle into lumps when they get too hot too fast. Pouring gradually through a sieve, while the broth is moving, spreads the egg out in fine threads and keeps the soup smooth.

“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 recipesBrown BreadBrown Bread461 recipesMutton BrothMutton Broth292 recipesYorkshire PuddingYorkshire Pudding264 recipes