Why it works: Bread and butter match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 27,145 recipes mention both. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
The recipe
Ingredients
Contains: egg, milk, wheat, fish, shellfish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the fish
Clean the cod's head and shoulders and soak it in coarse sea salt overnight.
Skin the cod and bind it with tape to keep it firm.
Poach
Place it in a fish kettle, back upwards, with cold water, a handful of salt, and vinegar.
Heat slowly and boil for about 30 minutes.
Let it drain on a drainer across the kettle.
Transfer it to a serving dish, carefully removing the tape.
Finish and serve
Brush the cod with beaten egg, sprinkle with bread crumbs, pepper, and salt, and dot with butter.
Brown it before a clear fire.
Serve with rich oyster sauce made with beef gravy, seasoned with Cayenne pepper, salt, and ketchup around the fish.
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 aroma chemistry they share, and how many recipes mention both.
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Bread + buttertop 3% of all pairsAroma overlapstrongMentioned together27,145 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Pepper + beeftop 4% of all pairsAroma overlapstrongMentioned together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Bread + oystertop 5% of all pairsAroma overlapmoderateMentioned together2,544 recipes
Shared aroma: 2-nonenal (fatty, green).
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Bread + beeftop 5% of all pairsAroma overlapstrongMentioned together4,031 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Egg + oystertop 5% of all pairsAroma overlapstrongMentioned together4,093 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
- Cod's head and shoulders
- Forms the main body of the dish, cooked whole so the flesh stays moist and holds its shape.
- Beaten egg
- Brushed on the fish to bind the bread crumbs and help them brown in the heat.
- Bread crumbs
- Form a crisp, golden crust on the surface when browned.
- Butter
- Adds fat and richness to the surface, aiding browning and flavour.
- Beef gravy
- Gives the oyster sauce a savoury, meaty base and body.
The step that matters
Heat slowly and boil for about 30 minutes. Bringing the water up gently and keeping the boil controlled helps the fish cook evenly and stay intact. A hard, rapid boil can break up the delicate flesh and leave the outside overcooked before the centre is done.
“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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