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Sauce

Sharp Brown Sauce

A thickened sauce made with onion, cider vinegar, water, tomato ketchup, pepper, salt, butter, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Cider and vinegar are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,431 recipes. Both carry 4-ethyl-2-methoxyphenol, which smells smoky, clove. The science ↓

Sharp Brown Sauce

Ingredients

Directions

  1. In a saucepan, combine the chopped onion, cider vinegar, water, tomato ketchup, pepper, salt, and melted butter.

  2. Stir in the sifted flour until well mixed.

  3. Bring the mixture to a boil and cook until it 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.

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. Cider + vinegartop 6% of all pairs
    Smell alikemoderate
    Cooked together3,431 recipes

    Shared aroma: 4-ethyl-2-methoxyphenol (smoky, clove).

  2. Tomato + peppertop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

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

  3. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

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

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

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

Flour
Thickens the sauce as it heats, giving it body.
Butter
Adds richness and fat, carrying flavour and smoothing the texture.
Tomato ketchup
Adds sweetness, acidity and colour to the sauce.
Cider vinegar
Adds sharp acidity that balances the sweetness and richness.

The step that matters

Stirring in the flour. Flour added to hot liquid can clump if not whisked in well. Stirring until fully mixed before boiling lets the starch disperse evenly, so the sauce thickens smoothly.

Swap the tomato

How well each one fits the dish's main ingredients (onion, cider, vinegar, ketchup, pepper, butter, flour):

  1. Mustardfits better
  2. Shallotfits better
  3. Capsicumfits better
  4. Tomatothe original

Fit is the average pairing score against onion, cider, vinegar, ketchup, pepper, butter, flour. 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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