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 ↓
Salmon Box
Ingredients
Directions
Prepare the box
Grease a bread pan or mold with butter.
Line the pan with warm steamed rice, placing the salmon in the center.
Season the salmon with salt and pepper, then cover it with the remaining rice.
Steam and make the sauce
Steam for 1 hour.
Melt the butter in a saucepan, stir in the flour and slowly add the hot water.
Mix in the beaten egg yolks and lemon juice.
Serve
Pour the sauce over the salmon box 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 + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Rice + peppertop 12% of all pairsSmell alikemoderateCooked together8,379 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Rice + lemontop 12% of all pairsSmell alikemoderateCooked together4,366 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 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
- Rice
- Forms the bulk of the box and holds its shape as it steams.
- Salmon
- Provides the main protein and flavor at the center of the box.
- Butter
- Adds richness and fat to the sauce and helps grease the pan.
- Flour
- Thickens the butter and water into a smooth sauce as it cooks.
- Egg yolks
- Enrich the sauce and help it thicken and turn creamy when gently heated.
- Lemon juice
- Adds acidity that brightens the rich, buttery sauce.
The step that matters
Mixing the egg yolks into the sauce. Egg yolks can scramble if the sauce is too hot when they are added. Stirring them in off the heat or over low heat keeps the sauce smooth and creamy.
Swap the lemon
How well each one fits the dish's main ingredients (butter, rice, salmon, pepper, flour, egg):
- Lemonthe original
- Avocadofits about as well
- Coconutfits less well
- Limefits less well
Fit is the average pairing score against butter, rice, salmon, pepper, flour, egg. 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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