Name: Horseradish Sauce
Ingredients: 3 tablespoons finely scraped horse-radish; 2 tablespoons cream or milk; 2-3 tablespoons vinegar; 1 large teaspoon castor sugar; 1 small teaspoon salt; ½ teaspoon black or white pepper; 2 teaspoons French mustard or 1 teaspoon English mustard

Why it works: Radish and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 297 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Horseradish Sauce

Ingredients

3 tablespoons finely scraped horse-radish
2 tablespoons cream or milk
2-3 tablespoons vinegar
1 large teaspoon castor sugar
1 small teaspoon salt
½ teaspoon black or white pepper
2 teaspoons French mustard or 1 teaspoon English mustard

Directions

Make the sauce

Mix all the ingredients thoroughly.
Prepare the sauce an hour before serving.

Serve

Serve hot or cold in a sauceboat.
To serve hot, place the sauce in a jar and set it in a saucepan of boiling water until heated, but do not let it boil.

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.

Radish + mustardtop 1% of all pairs

Smell alikestrong

Cooked together297 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).
Horse + radishtop 4% of all pairs

Smell alikemoderate

Cooked together529 recipes

Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
Horse + mustardtop 7% of all pairs

Smell alikemoderate

Cooked together201 recipes

Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
Vinegar + mustardtop 7% of all pairs

Smell alikemoderate

Cooked together14,067 recipes

Shared aroma: isobutyraldehyde (malty, green).
Radish + vinegartop 8% of all pairs

Smell alikemoderate

Cooked together508 recipes

Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Horse-radish: Provides the sharp, pungent heat that defines the sauce.
Cream or milk: Adds moisture and a smooth, mellow body that softens the bite.
Vinegar: Adds acidity that sharpens the flavour and balances the cream.
Castor sugar: Adds a little sweetness that rounds out the sharpness of the horseradish and vinegar.
French mustard: Adds sharpness and a mild tang that complements the horseradish.

The step that matters

Heating the sauce to serve hot. If the sauce boils, the cream can curdle and the horseradish heat can turn harsh and bitter. Gentle heating in a water bath keeps it smooth.

Swap the white pepper

How well each one fits the dish's main ingredients (horse, radish, cream, vinegar, sugar, mustard):

Capersfits better
Garlicfits better
Tarragonfits better
White pepperthe original

Fit is the average pairing score against horse, radish, cream, vinegar, sugar, mustard. 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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Horseradish Sauce