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 ↓
Salt Mackerel with Cream Sauce
Ingredients
Directions
Prepare the fish
Soak the mackerel overnight in lukewarm water, changing it in the morning for ice‑cold water.
Rub off all the salt and wipe the fish dry.
Grease a grill with butter and rub the fish on both sides with melted butter.
Cook the fish
Broil the fish quickly over a clear fire, turning gently to avoid breaking it.
Place the fish on a hot water dish and cover it while preparing the sauce.
Make the sauce
Heat the milk until scalding.
Stir in the cornstarch mixed with a little water until thickened.
Add the butter, pepper, salt, and chopped parsley to the thickened milk.
Beat the egg lightly and gradually pour the sauce over it.
Return the mixture to the heat and stir for one minute.
Pour the sauce over the fish and let it stand covered over hot water before serving.
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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Salt mackerel
- The main fish, whose salt-curing is removed by soaking before cooking.
- Egg
- Thickens the sauce gently when stirred in with warm milk, adding richness.
- Cornstarch
- Thickens the milk into a smooth sauce as it heats.
- Milk
- Forms the base of the cream sauce, giving it a mild, creamy body.
- Butter
- Adds fat and richness to the fish surface and the finished sauce.
The step that matters
Adding the egg to the sauce. Pouring hot sauce into a beaten egg too quickly can scramble it. Adding the sauce gradually tempers the egg so it thickens smoothly, and returning the mixture to gentle heat sets it without curdling.
Swap the parsley
How well each one fits the dish's main ingredients (butter, milk, pepper, egg):
- Nutmegfits about as well
- Parsleythe original
- Cinnamonfits about as well
- Tarragonfits less well
Fit is the average pairing score against butter, milk, pepper, egg. 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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