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
Cut around the stem of each large pepper and remove the seeds.
In a bowl, mix chopped cabbage, white mustard seed, celery seed, coarse sea salt, and grated horseradish.
Stuff and pack
Fill each pepper with the mixture and add a small onion and a little cucumber.
Tie the stem back on each pepper.
Place the peppers in a jar and cover with cold vinegar.
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).
-
Mustard + celerytop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Horseradish + cucumbertop 2% of all pairsSmell alikestrongCooked together640 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cabbage + horseradishtop 2% of all pairsSmell alikestrongCooked together481 recipes
Shared aroma: coumarin (sweet, hay).
-
Mustard + cucumbertop 3% of all pairsSmell alikestrongCooked together2,281 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
- Large peppers
- Hollowed shells that hold the filling and soften as they sit in the vinegar.
- Chopped cabbage
- Provides the crisp, crunchy bulk of the filling.
- White mustard seed
- Adds sharp, pungent heat that mellows during pickling.
- Grated horseradish
- Contributes sharp, pungent heat to the filling.
- Cold vinegar
- Acidity that preserves the peppers and gives them their tang.
The step that matters
Covering the peppers fully with cold vinegar. Peppers and vegetables exposed to air can spoil or mold. Keeping every piece submerged in the acidic liquid helps preserve them and keeps the texture and flavor even.
Swap the onion
How well each one fits the dish's main ingredients (pepper, cabbage, mustard, celery, horseradish, cucumber, vinegar):
- Lettucefits better
- Radishfits better
- Broccolifits better
- Onionthe original
Fit is the average pairing score against pepper, cabbage, mustard, celery, horseradish, cucumber, vinegar. 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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