Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Stewed Potatoes, with Mustard Sauce
Ingredients
Directions
Make the sauce
In a saucepan, lightly fry the diced ham in butter.
Stir in the flour and cook for 5 minutes.
Dilute with broth to create a light sauce, seasoning with salt and pepper.
Add the wine vinegar, parsley, thyme, and bay leaf; let it boil slowly for 20 minutes.
Skim the sauce and remove the herb bundle.
Finish and serve
Stir in the French mustard, then add the sliced potatoes.
Heat until the potatoes are warmed through, then serve.
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.
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Wine + vinegartop 12% of all pairsSmell alikemoderateCooked together3,493 recipes
Shared aroma: sotolon (curry, maple).
-
Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + winetop 13% of all pairsSmell alikemoderateCooked together8,645 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Raw ham
- Releases savory fat and flavor into the butter, seasoning the base of the sauce.
- Butter
- Carries the ham's flavor and forms the fat base for the flour roux.
- All-purpose flour
- Thickens the broth into a light sauce as it cooks with the butter.
- Wine vinegar
- Adds acidity that brightens the sauce and balances the rich ham and butter.
- French mustard
- Adds sharp, pungent flavor to the sauce and gives it its characteristic bite.
- Potatoes
- Provide the starchy body of the dish, soaking up the sauce as they warm.
The step that matters
Boil the sauce slowly for 20 minutes, then stir in the mustard. A gentle simmer lets the sauce reduce and the vinegar and herbs infuse without scorching the flour-thickened base. Mustard added after the long boil keeps its sharp flavor, since prolonged heat dulls it.
Swap the parsley
How well each one fits the dish's main ingredients (ham, butter, flour, sauce, pepper, wine, vinegar):
- Tarragonfits better
- Capersfits about as well
- Parsleythe original
- Thymefits about as well
Fit is the average pairing score against ham, butter, flour, sauce, pepper, wine, 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.
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.
Potato Croquettes255 recipes
Potato Rolls78 recipes
Potato Chips53 recipes
Sweet Potato Croquettes53 recipes