Why it works: Butter and onion are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓
Baked Halibut
Ingredients
Directions
Prepare the fish
Soak the halibut in cold salt water for 1 hour to remove fish oil flavor.
Wipe the fish dry.
Score the skin.
Place the fish in a baking pan.
Bake and baste
Pour boiling water over the fish.
Cover the pan.
Bake for 12 minutes per pound.
Baste generously with melted butter and lemon juice mixed with onion juice.
Transfer the fish to a hot dish.
Keep warm over boiling water.
Make the sauce
Stir in catsup and brown roux.
Add hot water if too thick.
Add claret.
Strain some sauce over the fish.
Serve the rest in a gravy boat.
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.
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Lemon + oniontop 19% of all pairsSmell alikemoderateCooked together15,646 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Halibut
- Forms the main protein; baking gently sets its flesh into moist, flaky pieces.
- Melted butter
- Adds fat and richness, carrying flavor and keeping the fish moist while it bakes.
- Brown roux
- Flour and fat cooked together to thicken the sauce into a smooth, rich body.
- Claret
- Adds acidity and wine flavor that gives the sauce depth.
- Lemon juice
- Adds acidity that brightens the butter basting sauce and balances its richness.
The step that matters
Bake for 12 minutes per pound. Fish cooks quickly and turns dry and tough once overcooked, so timing by weight matters. Keeping it covered while baking traps steam and helps it cook evenly and stay moist.
Swap the lemon
How well each one fits the dish's main ingredients (butter, onion):
- Avocadofits better
- Coconutfits better
- Mangofits better
- Lemonthe original
Fit is the average pairing score against butter, onion. 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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