Name: Russian Sauce
Ingredients: 4 tablespoons grated horseradish; 1 tablespoon weak mustard; ½ tablespoon sugar; ¼ teaspoon salt; 2-3 grains Cayenne pepper; 1-2 tablespoons vinegar; 2 parts melted butter (for fish)

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

In a bowl, mix the grated horseradish, weak mustard, sugar, salt, and Cayenne pepper.
Add vinegar and mix thoroughly.

Serve

Serve with cold meat.
For fish, combine the sauce with melted butter in a 2:1 ratio.

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).
Butter + fishtop 12% of all pairs

Smell alikemoderate

Cooked together4,488 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).

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

What each ingredient does

Horseradish: Provides the sharp, pungent heat that defines the sauce.
Weak mustard: Adds a sharp, pungent bite that supports the horseradish.
Vinegar: Adds acidity that brightens the sauce and cuts its richness.
Sugar: Adds a little sweetness to balance the sharpness of horseradish and vinegar.
Melted butter: Adds fat and richness, softening the heat when the sauce is served with fish.

Swap the horseradish

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

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

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