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 ↓
Stuffed Peppers
Ingredients
Directions
Prepare the peppers
Cut the tops off the peppers and remove the seeds.
Soak the peppers in salt water overnight.
Make the cabbage filling
Sprinkle ¼ cup salt over the chopped cabbage and let it stand for 1 hour.
Squeeze out the excess salt water from the cabbage.
Add the celery seed, mustard seed, and grated horseradish to the cabbage and mix well.
Stuff the peppers tightly with the cabbage mixture, being careful not to break them.
Turn the stuffed peppers upside down until all are filled.
Pickle and seal
Pack the peppers into a crock with the open ends facing up.
Boil 2 quarts of vinegar with 3 cups of sugar and pour it over the peppers.
Let the peppers stand overnight, then repeat this process for 3 consecutive mornings.
After the final day, pack the peppers into Mason jars and pour hot vinegar over them, then seal.
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.
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Mustard + horseradishtop 1% of all pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
-
Celery + mustardtop 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
- Green peppers
- Hold the stuffing and soften slightly during soaking, becoming tender while keeping their shape.
- Cabbage
- Forms the crisp, bulky filling that stays firm after the vinegar brine.
- Vinegar
- Provides the acidity that preserves the peppers and gives the pickle its sharp flavor.
- Sugar
- Balances the sharpness of the vinegar, adding sweetness to the brine.
- Horseradish
- Adds a sharp, pungent heat that mellows during pickling.
- Mustard seed
- Contributes a sharp, pungent flavor to the cabbage filling.
The step that matters
Squeezing the salted cabbage. Salting draws water out of the cabbage. If it is not squeezed well, excess liquid dilutes the vinegar brine and leaves the filling soggy and less crisp.
Swap the celery
How well each one fits the dish's main ingredients (pepper, cabbage, mustard, horseradish, vinegar, sugar):
- Dillfits better
- Tarragonfits better
- Capersfits better
- Celerythe original
Fit is the average pairing score against pepper, cabbage, mustard, horseradish, vinegar, 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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