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 ↓
Pepper Pickle
Ingredients
Directions
Prepare the peppers
Cut the peppers around the stem.
Remove all seeds from the peppers.
Replace the stem on each pepper.
Brine the peppers
Prepare a brine that will float an egg.
Boil the brine.
Pour the brine over the peppers.
Repeat this process every other morning for three times.
Stuff and pack
In a bowl, mix the chopped cabbage, white mustard seed, black mustard seed, grated horseradish, celery seed, brown sugar, chopped onions, salt, and black pepper thoroughly.
Stuff the peppers with the mixture.
Sew the caps on the peppers with coarse thread.
Layer the stuffed peppers in a jar, sprinkling brown sugar, sliced onions, horseradish, white mustard seed, black mustard seed, celery seed, ginger, cinnamon, mace, cloves, allspice, and crushed red pepper between layers.
Finish the jar
Mix ground mustard with a little water.
Pour ½ teacup of the mixture over the top of the jar.
Fill the jar with vinegar.
Add garlic for flavor if desired.
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 pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
-
Mustard + celerytop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Cabbage + horseradishtop 2% of all pairsSmell alikestrongCooked together481 recipes
Shared aroma: coumarin (sweet, hay).
-
Cabbage + mustardtop 3% of all pairsSmell alikestrongCooked together1,645 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + celerytop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Peppers
- Form the whole vessel that holds the filling and gives the pickle its body.
- Cabbage
- Adds bulk and a crisp texture to the stuffing.
- White mustard seed
- Contributes sharp, pungent flavor that mellows during pickling.
- Brown sugar
- Adds sweetness that balances the sharpness of vinegar and spices.
- Vinegar
- Provides acidity that preserves the pickle and gives it tang.
- Horseradish
- Adds a sharp, biting heat that stands up to long storage.
The step that matters
Brine strength. Salt in the brine draws water out of the peppers, firms their flesh and slows spoilage microbes. A brine too weak to float an egg has too little salt to do this, so the peppers may soften or spoil.
Swap the onion
How well each one fits the dish's main ingredients (pepper, egg, cabbage, mustard, horseradish, celery, sugar):
- Broccolifits better
- Beetrootfits better
- Lettucefits better
- Onionthe original
Fit is the average pairing score against pepper, egg, cabbage, mustard, horseradish, celery, 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.
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