Why it works: Shallot and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 859 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓
Stewed Mackerel
Ingredients
Directions
Make the sauce
Combine the gravy, parsley, fennel, and shallot in a pot.
Add the ketchup, essence of anchovies, and floured butter.
Stir until the mixture boils.
Slowly add the port wine.
Cook the fish
Add the thoroughly cleaned and boned mackerel.
Stew gently for 20 minutes, turning the fish halfway if possible.
Carefully dish the fish.
Finish and serve
Add mustard, port wine, and lemon juice to the sauce.
Boil the sauce briefly.
Pour the sauce over the fish.
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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Shallot + mustardtop 1% of all pairsSmell alikestrongCooked together859 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Parsley + shallottop 1% of all pairsSmell alikestrongCooked together3,737 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Parsley + fenneltop 1% of all pairsSmell alikestrongCooked together625 recipes
Shared aroma: myristicin (spice, warm).
-
Fennel + shallottop 2% of all pairsSmell alikestrongCooked together146 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Fennel + mustardtop 5% of all pairsSmell alikestrongCooked together292 recipes
Shared aroma: methyleugenol (clove, spice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mackerel (in the method)
- Is the main protein, gently stewed until cooked through in the sauce.
- Gravy
- Forms the liquid base of the sauce that the fish simmers in.
- Butter
- Floured butter thickens the sauce as it melts and cooks, adding body and richness.
- Port wine
- Adds depth and a little sweetness to the sauce.
- Lemon juice
- Adds acidity that brightens the rich, savoury sauce.
The step that matters
Stir until the mixture boils. Flour in the butter must be heated and stirred so it cooks out and thickens the sauce smoothly; stopping early leaves a raw flour taste and lumps.
Swap the fennel
How well each one fits the dish's main ingredients (parsley, shallot, ketchup, walnut, butter, port wine, mustard):
- Capersfits better
- Tarragonfits better
- Thymefits better
- Fennelthe original
Fit is the average pairing score against parsley, shallot, ketchup, walnut, butter, port wine, mustard. 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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