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 ↓
Planked White Fish with Potato Roses
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Preheat the oven to 400°F (200°C).
Clean the fish by removing the backbone, head, tail, and fins.
Spread the fish with soft butter, then dredge with flour, coarse sea salt, black pepper, and lemon juice.
Heat a plank in a pan in the oven, then place the fish on it and bake for about 15 minutes.
Remove the fish, surround it with mashed potatoes, and return to the oven.
Bake for an additional 20 to 30 minutes, depending on the thickness of the fish.
Prepare mashed potatoes with less cream or milk, place in a pastry bag, and pipe into rose shapes around the fish.
Brush the potato roses lightly with the egg yolk mixed with cream and brown quickly in the oven.
Garnish with lemon and parsley, and serve on the plank.
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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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
Swap the potato
How well each one fits the dish's main ingredients (fish, butter, flour, pepper, lemon, egg, cream):
- Spinachfits about as well
- Asparagusfits about as well
- Leekfits about as well
- Potatothe original
Fit is the average pairing score against fish, butter, flour, pepper, lemon, egg, cream. Candidates are from the same food group and used in at least 100 recipes.
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