Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Fish Pie
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure. The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Preheat the oven to 400°F (200°C).
Break the fish into flakes.
Mash the potatoes with a little milk and salt.
Assemble and bake
Season the fish with salt, pepper, mace, and parsley, then place it in a pie dish.
Drizzle melted butter over the fish.
Spread the mashed potatoes on top and mark with a fork.
Bake until brown, about 20-30 minutes.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + peppertop 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 + potatotop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cooked fish
- Forms the filling and provides the main body of the pie.
- Butter
- Adds richness and moisture to the fish and helps the topping brown.
- Cooked potatoes
- Form the mashed topping that becomes golden and crisp in the oven.
- Mace
- Adds a warm, aromatic spice flavour to the fish.
The step that matters
Spread the mashed potatoes on top and mark with a fork. The potato layer should seal over the fish so it stays moist underneath. Marking the surface with a fork creates ridges that brown more deeply in the oven.
Swap the mace
How well each one fits the dish's main ingredients (fish, butter, potato, pepper, parsley):
- Thymefits better
- Marjoramfits better
- Tarragonfits better
- Macethe original
Fit is the average pairing score against fish, butter, potato, pepper, parsley. 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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