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 ↓
Sauce Bordelaise
Ingredients
Directions
In a pan, brown the finely chopped onion in fat or butter.
Add the beef gravy and wine to the pan.
Season with pepper, coarse sea salt, and parsley.
Allow the mixture to simmer.
Thicken the sauce with a little browned flour.
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).
-
Onion + beeftop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Onion
- Browned in fat, it builds deep savory flavor and sweetness as the base of the sauce.
- Beef gravy
- Provides the main body and meaty savory flavor of the sauce.
- Claret or white wine
- Adds acidity and aromatic depth that balances the rich gravy.
- Browned flour
- Thickens the sauce and adds a nutty, toasted flavor.
The step that matters
Thicken the sauce with browned flour. Flour needs to be added in small amounts and simmered so it hydrates and cooks out its raw taste. Adding too much at once creates lumps or a pasty texture.
Swap the onion
How well each one fits the dish's main ingredients (beef, white wine, pepper, parsley, flour):
- Shallotfits better
- Carrotfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against beef, white wine, pepper, parsley, flour. 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.
Roast Beef211 recipes
Beef Loaf175 recipes
Corned Beef87 recipes
Beef Broth67 recipes