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 Boil Fresh Fish
Ingredients
Directions
Prepare the fish
Clean the fish thoroughly and rub it with coarse sea salt and black pepper.
Boil
Wrap the fish in a towel and drop it into boiling water.
Keep the water boiling rapidly.
A large fish will take about 45 minutes, while a small one will take less time.
Serve
Once cooked, place the fish on a dish.
Serve with melted butter, chopped eggs, and parsley.
Optionally, serve with walnut or mushroom ketchup.
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 + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Parsley + walnuttop 7% of all pairsSmell alikestrongCooked together865 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + mushroomtop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Parsley + mushroomtop 11% of all pairsSmell alikemoderateCooked together6,132 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Melted butter adds richness and a smooth fat to balance the mild, lean fish.
- Eggs
- Chopped eggs add richness and a soft, creamy texture alongside the fish.
The step that matters
Keep the water boiling rapidly. Once the fish goes in, the water temperature drops. Keeping it at a strong boil helps the water return to heat quickly, so the fish cooks evenly and the flesh firms without falling apart.
Swap the walnut
The recipe marks walnut as optional. How well each one fits the dish's main ingredients (fish, pepper, butter, egg, parsley, ketchup, mushroom):
- Walnutthe original
- Peasfits about as well
- Beansfits about as well
- Chestnutfits less well
Fit is the average pairing score against fish, pepper, butter, egg, parsley, ketchup, mushroom. 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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