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Sauce

Thin White Sauce

A simple sauce made from milk, flour, fat, salt, and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Thin White Sauce

Why it works: Milk and flour 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 ↓

Thin White Sauce

Ingredients

Directions

  1. Melt the fat in a saucepan.

  2. Stir in the flour until well combined.

  3. Gradually add the milk, stirring constantly.

  4. Cook until the sauce thickens.

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

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

Milk and flour 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

Flour
Starch thickens the sauce as it heats in the melted fat and milk.
Milk
Forms the liquid base, and its water hydrates the starch to thicken the sauce.
Fat
Coats the flour to form a roux, which keeps the sauce smooth and adds richness.

The step that matters

Gradually add the milk, stirring constantly. Starch granules coated in fat hydrate slowly. Adding milk gradually while stirring spreads the liquid evenly, which prevents lumps and gives a smooth sauce.

“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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