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 ↓
Governor's Sauce
Ingredients
Directions
Prepare the tomatoes
Slice the tomatoes and sprinkle with 1 cup coarse sea salt.
Let sit overnight.
In the morning, drain the tomatoes well.
Cook the sauce
Combine the tomatoes, peppers, horseradish, cayenne, black pepper, mustard, and sugar in a pot.
Simmer all ingredients together until cooked through.
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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Horseradish + mustardtop 1% of all pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + horseradishtop 11% of all pairsSmell alikemoderateCooked together2,646 recipes
Shared aroma: coumarin (sweet, hay).
-
Mustard + tomatotop 11% of all pairsSmell alikemoderateCooked together2,482 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
- Tomatoes
- Salting draws out their water, and draining them well keeps the sauce from becoming thin.
- Peppers
- Provide the main body and pepper flavor of the sauce.
- Horseradish
- Adds sharp, pungent heat that stays after cooking.
- Sugar
- Balances the heat and acidity with a touch of sweetness.
The step that matters
Draining the salted tomatoes. Salt pulls water out of the tomatoes overnight. If they are not drained well, the excess liquid dilutes the sauce and lengthens the simmer needed to thicken it.
Swap the tomato
How well each one fits the dish's main ingredients (pepper, horseradish, mustard, sugar):
- Beetrootfits better
- Broccolifits better
- Shallotfits better
- Tomatothe original
Fit is the average pairing score against pepper, horseradish, mustard, 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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