Why it works: Lemon and pepper 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 ↓
Eel Pie
Ingredients
Directions
The book says “a fairly hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the stock
Place eel heads, tails, and fins in a saucepan with enough water to cover.
Simmer for 1 hour, then strain and skim the stock.
Assemble the pie
Layer the eel pieces in a pie dish, seasoning with salt and pepper between layers.
Mix the lemon juice and mushroom ketchup into the stock, then pour half over the eels in the pie dish.
Cover the pie with pastry and bake at 400°F (200°C) for 1 hour.
Warm the remaining stock and pour it into the pie through a funnel immediately after removing it from the oven.
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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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Mushroom + lemontop 15% of all pairsSmell alikemoderateCooked together4,633 recipes
Shared aroma: 2-nonenal (fatty, green).
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Mushroom + ketchuptop 16% of all pairsSmell alikelowCooked together2,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Ketchup + peppertop 24% of all pairsSmell alikelowCooked together3,207 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eels
- Provide the main meat and body of the pie, which becomes tender during the long cooking.
- Eel heads, tails, and fins
- Release gelatin and flavour into the stock, which sets and moistens the filling.
- Mushroom ketchup
- Adds deep savoury umami flavour to the stock and filling.
- Puff pastry
- Forms a flaky, golden crust that encloses and seals the filling.
The step that matters
Pouring the remaining stock into the hot pie. Adding the warm stock right after baking helps keep the filling moist and loose, so it sets into a jelly-like texture as it cools rather than drying out.
Swap the lemon
How well each one fits the dish's main ingredients (mushroom, ketchup, pepper):
- Lemonthe original
- Limefits about as well
- Red currantfits less well
- Grapefits less well
Fit is the average pairing score against mushroom, ketchup, pepper. 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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