Why it works: Parsley and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 9,057 recipes mention both. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓
The recipe
Ingredients
Contains: egg, milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the eels
In a saucepan, combine onions, parsley, bay leaf, thyme, cloves, red pepper, and black pepper.
Add the eel pieces, butter, white wine, and broth. Cook rapidly until boiling.
Remove from heat and let it simmer until the eels are done.
Make the sauce
In another saucepan, whisk together egg yolks, butter, lemon juice, and finely chopped parsley.
Strain the eels through a colander and pour the gravy into the egg mixture.
Stir until the sauce thickens, then add the eels back in.
If desired, add mushrooms and thin the sauce before serving.
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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Parsley + thymetop 1% of all pairsAroma overlapstrongMentioned together9,057 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Thyme + peppertop 3% of all pairsAroma overlapstrongMentioned together11,585 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Thyme + clovetop 3% of all pairsAroma overlapstrongMentioned together3,210 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Clove + peppertop 3% of all pairsAroma overlapstrongMentioned together13,144 recipes
Shared aroma: ethyl octanoate (fruity, wine).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Egg yolks thicken the sauce as they heat, giving it a smooth, rich body.
- Eels
- The main protein, cooked gently in the seasoned broth until tender.
- Butter
- Adds richness and a silky mouthfeel to the sauce.
- White wine
- Adds acidity and aromatic depth to the cooking liquid.
- Lemon juice
- Adds bright acidity that balances the richness of the yolks and butter.
The step that matters
Stirring the egg yolk sauce as it thickens. Egg yolks set at a gentle heat. If the mixture gets too hot or is stirred too little, the yolks can scramble and turn grainy instead of forming a smooth, thick sauce.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (parsley, thyme, clove, pepper, butter, white wine, egg):
- Carrotbetter flavor fit
- Capsicumbetter flavor fit
- Shallotbetter flavor fit
- Onionthe original
Fit is the average pairing score against parsley, thyme, clove, pepper, butter, white wine, egg. 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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