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 ↓
Baked Halibut
Ingredients
Directions
Prepare
Soak the halibut steak in salted water for about 1 hour.
Drain the fish.
Rub the fish with salt and pepper.
Bake
Melt shortening in a roaster.
Lay the fish inside the roaster.
Top the fish with onion slices, tomato juice, and lemon juice.
Add boiling water.
Bake for about 1 hour.
Remove the fish.
Thicken the sauce with moistened flour.
Leftovers
Break up leftover fish into a baking dish.
Cover the dish with sauce.
Bake again the next day for improved flavor.
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).
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + lemontop 11% of all pairsSmell alikemoderateCooked together4,592 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Halibut steak
- Provides the main flesh, which turns firm and flaky as it cooks through.
- Shortening
- Adds fat that carries flavour and helps keep the fish from drying out.
- Flour
- Starch thickens the cooking liquid into a sauce when it is heated.
- Tomato juice
- Adds acidity and savoury flavour to the sauce as it bakes.
- Lemon juice
- Adds bright acidity that balances the richness of the fish and sauce.
- Onion
- Releases sweetness and aroma into the liquid during baking.
The step that matters
Thicken the sauce with moistened flour. Flour added dry clumps and stays grainy. Mixing it smooth in cold liquid first lets the starch disperse, and it thickens only once the sauce is hot enough.
Swap the onion
How well each one fits the dish's main ingredients (pepper, tomato, lemon, flour):
- Okrafits better
- Capsicumfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against pepper, tomato, lemon, flour. 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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