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 ↓
Roman Pie
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the filling
Remove all fat from the cooked meat and cut it into small pieces.
Chop the bacon coarsely and cut the macaroni into thick rings.
Make the sauce
In a saucepan, combine the milk, onion, lemon peel, and mace.
Bring the mixture to a boil.
Reduce the heat and simmer gently for 30 minutes.
In another pan, melt the butter.
Stir in the flour for a few minutes without browning.
Add the milk mixture to the butter and flour.
Stir quickly until smooth and thick.
Season with salt and pepper.
Strain the sauce into a basin.
Add the meat, bacon, and macaroni to the sauce. Mix well.
Assemble and bake
Butter a suitable tin mold.
Coat it thickly with finely broken vermicelli.
Line the mold with light paste.
Fill the mold with the meat mixture.
Cover with a layer of paste.
Bake in a preheated oven at 400°F (200°C) until the paste is thoroughly cooked.
Serve
Turn the pie out onto a hot dish.
Serve with tomato sauce.
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).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 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
- Flour
- Thickens the butter and milk mixture into a smooth, thick sauce that binds the filling.
- Butter
- Forms the roux with the flour and adds richness to the sauce.
- Milk
- Forms the liquid base of the sauce that coats the meat and macaroni.
- Macaroni
- Adds bulk and body to the filling, soaking up some of the sauce.
- Bacon
- Adds fat and savory flavor to the filling.
The step that matters
Stir the flour without browning. Cooking the flour and butter briefly keeps the roux pale and lets the starch thicken the sauce smoothly; browning changes the flavor and weakens thickening, while stirring quickly until smooth prevents lumps.
Swap the mace
How well each one fits the dish's main ingredients (meat, milk, onion, lemon, butter, flour, pepper):
- Thymefits better
- Parsleyfits better
- Cardamomfits better
- Macethe original
Fit is the average pairing score against meat, milk, onion, lemon, butter, flour, 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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