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Sauce

Thin White Sauce

A thin sauce made from butter, flour, salt, and milk.

From an old cookbook · modernised transcription
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Thin White Sauce

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 ↓

Thin White Sauce

Ingredients

Directions

  1. Melt the butter in a saucepan.

  2. Add the flour and salt, and cook thoroughly.

  3. Slowly add the milk while stirring constantly.

  4. Continue to stir and 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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  2. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter 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

Flour
Starch that thickens the milk into a smooth sauce as it cooks.
Butter
Fat that carries flavor and combines with flour to form a roux.
Milk
Liquid that hydrates the starch and forms the body of the sauce.

The step that matters

Adding the milk slowly while stirring constantly. Adding liquid gradually while stirring keeps the flour dispersed, so the sauce thickens smoothly without lumps.

“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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