Name: Russian Sauce
Ingredients: 4 tablespoons grated horseradish; 1 teaspoon weak mustard; ½ teaspoon sugar; ¼ teaspoon salt; 2-3 grains cayenne pepper; 1-2 tablespoons vinegar; 2 parts melted butter

Why it works: Horseradish and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,832 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Russian Sauce

Ingredients

Directions

Make the sauce

Mix grated horseradish, mustard, sugar, salt, cayenne, and vinegar thoroughly.
For fish, mix the sauce with melted butter in a 2:1 ratio.

Serve

Serve with cold meat.

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.

Horseradish + mustardtop 1% of all pairs

Smell alikestrong

Cooked together1,832 recipes

Shared aroma: coumarin (sweet, hay).
Mustard + vinegartop 7% of all pairs

Smell alikemoderate

Cooked together14,067 recipes

Shared aroma: isobutyraldehyde (malty, green).
Mustard + peppertop 9% of all pairs

Smell alikemoderate

Cooked together15,430 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Horseradish + peppertop 11% of all pairs

Smell alikemoderate

Cooked together2,646 recipes

Shared aroma: coumarin (sweet, hay).
Horseradish + vinegartop 12% of all pairs

Smell alikemoderate

Cooked together2,609 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

Grated horseradish: Provides the sharp, pungent heat that defines the sauce.
Vinegar: Adds acidity that sharpens the flavor and balances the sweetness.
Melted butter: Adds richness and a smooth, fatty texture when mixed in for fish.
Mustard: Adds a mild sharpness that supports the horseradish heat.

Swap the horseradish

How well each one fits the dish's main ingredients (mustard, sugar, pepper, vinegar, butter):

Horseradishthe original
Capsicumfits about as well
Radishfits about as well
Shallotfits about as well

Fit is the average pairing score against mustard, sugar, pepper, vinegar, butter. 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.