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Sauce

Brown Sauce

A savory sauce made with butter, flour, onion, lemon juice, and stock, seasoned with salt and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Brown Sauce

Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Brown Sauce

Ingredients

Directions

  1. Melt the butter in a saucepan over medium heat.

  2. Add the onion and brown slightly.

  3. Gradually add the flour, then the stock.

  4. Cook for 10 minutes.

  5. Stir in the lemon juice, salt, and pepper.

  6. Strain the sauce, reheat, and serve.

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. Lemon + peppertop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  2. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: decanal (soap, orange peel).

  5. Butter + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

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

Butter
Adds richness and fat, and helps carry flavor in the sauce.
Flour
Thickens the stock into a smooth, body-rich sauce as it cooks.
Onion
Browning in the butter builds a deeper, savory flavor base.
Stock
Forms the liquid base that the flour thickens into sauce.

The step that matters

Gradually add the flour, then the stock. Adding flour gradually and stirring keeps it dispersed so lumps do not form, giving a smooth sauce as the stock is added.

Swap the onion

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

  1. Shallotfits better
  2. Arrowrootfits better
  3. Okrafits better
  4. Onionthe original

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