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Horseradish Sauce

A quick butter‑based sauce with horseradish, stock, lemon, parsley, sugar, pepper, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 ingredients
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Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Horseradish Sauce

Ingredients

Directions

  1. In a saucepan, melt the butter and whisk in the flour.

  2. Add the stock and stir until it boils.

  3. Stir in the horseradish, sugar, pepper, and salt; let it boil for 1 minute.

  4. Remove from heat and mix in the lemon juice and parsley.

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. Parsley + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together14,037 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  2. Parsley + peppertop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

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

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

  4. Horseradish + parsleytop 6% of all pairs
    Smell alikestrong
    Cooked together562 recipes

    Shared aroma: coumarin (sweet, hay).

  5. Horseradish + lemontop 9% of all pairs
    Smell alikestrong
    Cooked together1,155 recipes

    Shared aroma: coumarin (sweet, hay).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Butter
Melted fat that forms the base of the roux and adds richness to the sauce.
Flour
Thickens the sauce as it cooks with the butter and stock, giving it body.
Stock
Forms the liquid base of the sauce, adding savory flavor.
Horseradish
Provides the sharp, pungent heat that defines the sauce.
Lemon juice
Adds acidity that brightens the sauce and balances the richness.

The step that matters

Boiling the sauce after adding horseradish. Horseradish's pungent heat is volatile and fades with prolonged cooking, so boiling only briefly, as the step directs, keeps the sauce sharp. Boiling also fully cooks the flour so it no longer tastes raw and the sauce reaches full thickness.

Swap the horseradish

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

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

Fit is the average pairing score against butter, flour, parsley, lemon, pepper, sugar. 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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