Why it works: Lemon and arrowroot match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and 553 recipes mention both. Both carry coumarin, which smells sweet, hay. The science ↓
Eggs a LA Duchesse
Ingredients
Directions
Make the flavoured milk
Boil the milk with bay leaves, cinnamon, and lemon peel until well-flavored.
Strain the milk into a shallow stewpan and keep it boiling.
Poach the eggs
Whip the egg whites to a strong froth.
Drop spoonfuls of the whipped egg whites into the boiling milk.
Turn the egg whites gently until cooked, then remove and drain them.
Thicken and serve
Thicken some of the milk with arrowroot or the egg yolks and pour over the eggs.
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 + arrowroottop 4% of all pairsAroma overlapstrongMentioned together553 recipes
Shared aroma: coumarin (sweet, hay).
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Cinnamon + arrowroottop 4% of all pairsAroma overlapstrongMentioned together166 recipes
Shared aroma: coumarin (sweet, hay).
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Cinnamon + lemontop 7% of all pairsAroma overlapstrongMentioned together7,950 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Milk + cinnamontop 10% of all pairsAroma overlapmoderateMentioned together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Milk + lemontop 15% of all pairsAroma overlapmoderateMentioned together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Milk
- Forms the poaching liquid and the base of the flavoured sauce.
- Egg whites
- Whipped into a froth that sets into light, delicate poached pieces when cooked.
- Arrowroot or egg yolks
- Thickens part of the milk so it becomes a sauce for the eggs.
The step that matters
Turning the whipped egg whites in the boiling milk. The whites must be cooked gently; if the milk is too violent the delicate foam collapses and breaks apart, so turn them carefully until just set.
Flavor stand-ins for the arrowroot
How well each one fits the dish's main ingredients (milk, cinnamon, lemon, egg):
- Arrowrootthe original
- Sweet potatoabout as good a flavor fit
- Asparagusabout as good a flavor fit
Fit is the average pairing score against milk, cinnamon, lemon, 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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