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 ↓
To Bake Mackerel
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the fish
Preheat the oven to 400°F (200°C).
Open and clean the mackerel thoroughly, then wipe them dry.
Season the inside with pepper and salt.
Make and stuff
In a bowl, mix bread crumbs, chopped roe, parsley, sweet herbs, egg yolk, and additional pepper and salt to taste.
Stuff the mixture into the mackerel and sew it closed.
Bake and serve
Place the fish in a deep baking dish and lightly dredge with flour.
Dot the fish with small pieces of cold butter.
Bake in the oven for 28 to 30 minutes.
Serve hot with parsley 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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Bread + eggtop 13% of all pairsSmell alikemoderateCooked together22,662 recipes
Shared aroma: (e)-2-octenal (fatty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
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, providing the flesh that cooks through in the oven.
- Bread crumbs
- Absorb moisture and bind with the egg yolk to form a soft, cohesive stuffing.
- Egg yolk
- Binds the stuffing together and adds richness as it sets in the oven.
- Roe
- Adds richness and a briny flavour to the stuffing.
- Cold butter
- Melts over the fish, adding moisture and fat for a rich, golden surface.
- Flour
- Dries the surface of the fish lightly, helping it take on colour as it bakes.
The step that matters
Stuffing and sewing the fish closed. If the stuffing is packed too loosely or the fish is not sealed well, the filling can fall out during baking. Stuffing it firmly without overfilling keeps the mixture inside and helps the fish cook evenly.
Swap the parsley
How well each one fits the dish's main ingredients (pepper, bread, roe, egg, flour, butter):
- Parsleythe original
- Nutmegfits about as well
- Capersfits about as well
- Thymefits less well
Fit is the average pairing score against pepper, bread, roe, egg, flour, 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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