Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Smoked Salmon Au Jeanno
Ingredients
Directions
Prepare the salmon
Cut the smoked salmon into strips as long as your middle finger and twice as wide.
Soak the salmon strips in cold water for 2 hours.
In a saucepan, cover the salmon with more cold water and bring to a gentle boil.
Make the gravy
In another saucepan, heat the beef or veal broth with the boiled onion, then strain out the onion.
Add ketchup, vinegar, mustard, and cayenne to the hot broth and mix well.
Finish and serve
Drain the water from the salmon, wipe each piece, and butter them well.
Place the buttered salmon in the hot gravy, cover, and let it simmer (do not boil) for 10 minutes.
Arrange the salmon in rows on a hot dish, cover with gravy, and serve with heated crackers and butter.
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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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 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
- Smoked salmon
- Provides the main flesh and smoky flavor that the gravy coats.
- Beef or veal broth
- Forms the savory base of the gravy and carries the other seasonings.
- Ketchup
- Adds tangy sweetness and body to the gravy.
- Vinegar
- Adds acidity that brightens the rich broth and balances the fish.
- Butter
- Adds richness and fat that keeps the salmon moist during simmering.
The step that matters
Simmer the salmon without boiling. Boiling toughens and breaks down the delicate salmon proteins and can make the gravy cloudy or ragged. A gentle simmer cooks the fish evenly while keeping its texture tender and intact.
Swap the mustard
How well each one fits the dish's main ingredients (salmon, beef, onion, ketchup, vinegar, pepper, butter):
- Capsicumfits about as well
- Chivefits about as well
- Horseradishfits about as well
- Mustardthe original
Fit is the average pairing score against salmon, beef, onion, ketchup, vinegar, pepper, butter. 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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