Name: Horseradish Mustard
Ingredients: 10 gallons American mustard; 5 gallons horseradish; Waste from grated horseradish

Why it works: Mustard and horseradish 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 ↓

Horseradish Mustard

Ingredients

10 gallons American mustard
5 gallons horseradish
Waste from grated horseradish

Directions

Grate the horseradish, saving the waste that is too coarse to use.
Mix the waste with the American mustard.
Run the mixture through a mustard stone to combine.

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.

Mustard + horseradishtop 1% of all pairs

Smell alikestrong

Cooked together1,832 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

Horseradish: Provides the sharp, pungent heat that defines the mustard.
American mustard: Forms the base of the mixture and carries the mustard flavour and body.

“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.