Why it works: Parsley and pepper 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 ↓
Baked Fish Rolls
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.
Make the filling
Melt the butter in a pan, then add the flour and stir in the milk, cooking until boiling.
Add the fish, anchovy essence, and seasonings.
Shape the rolls
Roll out the potato pastry and cut it into 4‑inch squares.
Place a little of the fish mixture on each square.
Brush the edges with egg, fold them together, and pinch to seal.
Bake and serve
Brush the tops with egg and place on a greased baking sheet.
Bake in a 400°F (200°C) oven until golden.
Serve very hot.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Fish + anchovytop 9% of all pairsSmell alikelowCooked together637 recipes
Shared aroma: decanal (soap, orange peel).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potato pastry
- Forms the golden, flaky wrapper that encloses the filling and browns in the oven.
- Flour
- Thickens the butter and milk into a binding sauce that holds the fish filling together.
- Milk
- Makes the flour thickening a smooth, creamy sauce that keeps the filling moist.
- Cooked fish
- Provides the main filling, bound into the sauce so it stays moist inside the pastry.
- Butter
- Adds richness and flavour to the base of the filling sauce.
The step that matters
Pinching the edges to seal. If the edges are not brushed with egg and pressed firmly, the pastry can fail to stick, letting the moist fish filling leak out during baking.
Swap the parsley
How well each one fits the dish's main ingredients (potato, fish, milk, flour, butter, anchovy, pepper):
- Parsleythe original
- Capersfits about as well
- Thymefits less well
- Nutmegfits less well
Fit is the average pairing score against potato, fish, milk, flour, butter, anchovy, 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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