Why it works: Parsley and pepper 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 ↓
Baked Mackerel or Herrings
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the fish
Remove the heads, fins, and bones from the fish. Wash and dry them.
Simmer the heads, fins, and bones to make gravy.
Sprinkle the fish lightly with pepper, salt, and flour.
Assemble
Place the fish in a baking dish with melted dripping.
Mix the bread crumbs, parsley, and herbs with a little salt and pepper. Spread the mixture over the fish.
Cover the fish with the other fish. Dredge the covered fish again with pepper, salt, and flour.
Finish with raspings.
Bake
Bake in a hot oven at 400°F (200°C) for about 40 minutes, basting a few times.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Bread + parsleytop 15% of all pairsSmell alikemoderateCooked together8,588 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Bread + peppertop 16% of all pairsSmell alikemoderateCooked together20,964 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mackerel
- Forms the main body of the dish, cooking into moist, flaky flesh.
- Bread crumbs
- Form a crisp, golden crust over the fish as they bake.
- Dripping
- Adds fat that carries flavour and helps the crust brown.
- Parsley
- Adds fresh, green aroma that lightens the rich fish.
The step that matters
Basting during baking. Spooning melted fat over the fish during baking keeps the surface moist and helps the crumb coating brown evenly, so the fish does not dry out before it is cooked through.
Swap the parsley
How well each one fits the dish's main ingredients (bread, flour, pepper):
- Turmericfits about as well
- Marjoramfits about as well
- Parsleythe original
- Nutmegfits about as well
Fit is the average pairing score against bread, flour, pepper. 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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