Why it works: Pepper and onion are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Baked 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
Clean the fish and wash it thoroughly in cold water with a little salt.
Soak the fish in salted water until ready to use.
Bake
Place the whole fish in a baking pan and season inside and out with salt and pepper, rubbing it in well.
Dot the fish with a few pieces of butter.
Bake in a 350°F (175°C) oven for 30 minutes.
Add 1 cup of hot water and 1-2 sliced onions, then continue baking for 1-2 hours, basting frequently.
If the fish is lean, use more butter while baking.
Serve
Remove the fish to a hot platter just 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 their aromas overlap, and how often cooks already put them together.
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Fish + oniontop 19% of all pairsSmell alikelowCooked together1,924 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Fish + peppertop 21% of all pairsSmell alikemoderateCooked together3,948 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fresh fish
- Forms the main body of the dish, cooking through in the oven.
- Butter
- Adds fat that carries flavour and keeps the fish moist as it bakes.
- Sliced onions
- Release moisture and sweetness into the pan liquid as they bake.
The step that matters
Basting during the long bake. Lean fish dries out over a one to two hour bake. Regular basting with the pan liquid and butter keeps the surface moist and the flesh tender.
Swap the onion
How well each one fits the dish's main ingredients (fish, pepper, butter):
- Capsicumfits better
- Potatofits better
- Tomatofits about as well
- Onionthe original
Fit is the average pairing score against fish, pepper, butter. 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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