Why it works: Lemon and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 14,036 recipes mention both. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
The recipe
Ingredients
Contains: milk, wheat, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Also mentioned in the method: fish
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the fish stock
Put the bones and fins of the sole into a saucepan with ½ cup of water and milk, and bring to a boil.
Boil the stock for 10 minutes.
Strain the fish stock from the bones into the saucepan.
Prepare and bake the fillets
Fold the fillets loosely.
Place the fillets on a greased baking tray.
Sprinkle the fillets with salt and pepper.
Squeeze lemon juice over the fillets.
Cover the fillets with buttered paper.
Bake in a 350°F (175°C) oven for about 6 minutes.
Make the sauce and serve
Melt the butter in a separate saucepan.
Add the flour to the melted butter and mix well.
Add salt, pepper, cream, lemon juice, and chopped parsley to the sauce.
Arrange the fillets in a circle on a dish.
Pour the sauce over the fillets.
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 aroma chemistry they share, and how many recipes mention both.
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Lemon + parsleytop 1% of all pairsAroma overlapstrongMentioned together14,036 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Pepper + parsleytop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Lemon + peppertop 2% of all pairsAroma overlapstrongMentioned together27,039 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + milktop 3% of all pairsAroma overlapstrongMentioned together81,222 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sole
- Forms the delicate fish base that is cooked gently and served as the main dish.
- Butter
- Melted with flour to form the roux that gives the sauce its body and rich flavor.
- Flour
- Combined with melted butter to thicken the sauce into a smooth, cohesive texture.
- Cream
- Adds richness and a smooth, velvety texture to the finished sauce.
- Lemon juice
- Adds acidity that brightens the fish and balances the richness of the butter and cream.
The step that matters
Strain the fish stock and thicken the sauce gently. Flour must be cooked smoothly into the melted butter and the stock added without lumps, because uneven mixing leaves a grainy sauce. Keeping the sauce at a gentle simmer after adding cream prevents curdling and separation.
Flavor stand-ins for the parsley
How well each one fits the dish's main ingredients (butter, flour, milk, lemon, pepper, cream):
- Nutmegabout as good a flavor fit
- Parsleythe original
- Cardamomabout as good a flavor fit
- Cinnamonabout as good a flavor fit
Fit is the average pairing score against butter, flour, milk, lemon, pepper, cream. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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