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 ↓
Pepper Sauce
Ingredients
Directions
Prepare
In a large bowl, combine the green peppers and cabbage.
Add the grated horseradish, mustard seed, allspice, cloves, mace, coarse sea salt, and sugar.
Make and add the vinegar
In a pot, boil the spices and sugar in the vinegar.
While hot, pour the vinegar mixture over the peppers and cabbage.
Store
Once cooled, cover the jars and store in a cool, dry place.
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 pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
-
Allspice + clovetop 1% of all pairsSmell alikestrongCooked together7,874 recipes
Shared aroma: estragole (anise, licorice).
-
Cabbage + horseradishtop 2% of all pairsSmell alikestrongCooked together481 recipes
Shared aroma: coumarin (sweet, hay).
-
Mustard + allspicetop 2% of all pairsSmell alikestrongCooked together1,928 recipes
Shared aroma: methyleugenol (clove, spice).
-
Cabbage + mustardtop 3% of all pairsSmell alikestrongCooked together1,645 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green peppers
- Provide the main bulk and fresh, mild pepper flavour of the relish.
- Cabbage
- Adds crunch and bulk that holds up to the pickling liquid.
- Vinegar
- Acidity that preserves the vegetables and gives the sauce its sharp tang.
- Horseradish
- Supplies the pungent heat that gives the sauce its characteristic bite.
- Sugar
- Balances the sharpness of the vinegar with a touch of sweetness.
The step that matters
Pour the vinegar mixture while hot. Pouring the boiling vinegar over the vegetables softens them and helps the liquid penetrate, so the sauce is evenly flavoured and preserved. Letting it cool first would leave the vegetables firmer and less infused.
Swap the mace
How well each one fits the dish's main ingredients (pepper, cabbage, horseradish, mustard, allspice, clove, sugar):
- Cinnamonfits better
- Turmericfits better
- Nutmegfits better
- Macethe original
Fit is the average pairing score against pepper, cabbage, horseradish, mustard, allspice, clove, sugar. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Mixed Mustard9 recipes
Horseradish Cream Sauce6 recipes
Wine Sauce (for stewed fruit)186 recipes
Caper Sauce180 recipes