Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,118 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
The recipe
Ingredients
Contains: wheat, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 400°F (200°C).
In a bowl, mix the chopped onion, parsley, bread crumbs, and olive oil.
Spread the mixture on the bottom of a baking pan and over the fish.
Season the fish with salt and pepper, then pour the broth over it.
Bake and serve
Bake the fish, basting frequently, until done.
Remove the fish from the oven, add a little water and Worcestershire sauce to the pan juices.
Stir well, boil for one minute, and pour over the fish 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 aroma chemistry they share, and how many recipes mention both.
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + olivetop 4% of all pairsAroma overlapstrongMentioned together8,668 recipes
Shared aroma: myrcene (balsamic, herbaceous).
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Bread + olivetop 4% of all pairsAroma overlapstrongMentioned together999 recipes
Shared aroma: 2-undecenal (sweet).
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Onion + olivetop 5% of all pairsAroma overlapmoderateMentioned together26,431 recipes
Shared aroma: ethyl butyrate (apple, fruity).
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Onion + parsleytop 6% of all pairsAroma overlapstrongMentioned together25,834 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bread crumbs
- Form a crisp, absorbent layer that soaks up juices and helps the topping brown.
- Olive oil
- Adds fat that carries flavour and helps the crumb topping brown and stay moist.
- Broth
- Provides liquid that steams the fish and forms the base of the pan juices.
- Onion
- Adds savoury sweetness and aroma as it softens in the crumb mixture.
The step that matters
Basting the fish during baking. Frequent basting spoons hot liquid over the fish, keeping its surface moist so it does not dry out before it cooks through.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (parsley, bread, olive, pepper, sauce):
- Tomatobetter flavor fit
- Capsicumbetter flavor fit
- Carrotbetter flavor fit
- Onionthe original
Fit is the average pairing score against parsley, bread, olive, pepper, sauce. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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