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 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 teaspoon salt
½ teaspoon black or white pepper
2 teaspoons French mustard or 1 teaspoon English mustard

Directions

Mix all the ingredients thoroughly.
Prepare the sauce about an hour before serving.
Serve hot or cold.

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 richness, softening the bite of the horseradish.
Vinegar: Adds acidity that sharpens the flavour and balances the richness.
Castor sugar: Adds sweetness that rounds out the heat and acidity.
Mustard: Adds sharpness and extra pungency alongside the horseradish.

The step that matters

Prepare the sauce about an hour before serving.. Horseradish's heat comes from volatile compounds released when it is grated and mixed. Those compounds fade with air exposure and heat, so the sauce's pungency changes with timing and should be checked before serving.

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