Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Cream Fish
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the fish
Boil the cod or halibut and break it into small pieces while hot.
Add butter, pepper, and salt to the fish.
Make the sauce
In a saucepan, boil the milk with the onion and ¼ pound of butter.
Thicken the milk mixture with flour and let it boil.
Assemble and bake
Layer the fish and sauce in a dish until filled.
Top with breadcrumbs, bits of butter, and lemon juice.
Brown in the oven at 350°F (175°C).
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 + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour 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
- Cod or halibut
- Forms the main body of the dish, flaking into tender pieces when cooked.
- Milk
- Forms the base of the creamy sauce that moistens the fish.
- Flour
- Thickens the milk so the sauce clings to the fish instead of running off.
- Butter
- Adds richness and fat, carrying flavor and helping the top brown.
- Breadcrumbs
- Form a crisp topping that browns in the oven.
- Lemon juice
- Adds acidity that brightens the rich sauce and fish.
The step that matters
Thicken the milk mixture with flour. Flour must be cooked into the hot milk and boiled so its starch swells and thickens the sauce; if it is added to cold liquid or not boiled, lumps form and the sauce stays thin and floury.
Swap the onion
How well each one fits the dish's main ingredients (butter, pepper, milk, flour, lemon):
- Arrowrootfits better
- Shallotfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against butter, pepper, milk, flour, lemon. 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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