Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Asparagus a LA Frangaise
Ingredients
Directions
Prepare
Bring a pot of water to a boil and add salt and carbonate of soda.
Add the asparagus and cook for 10 to 12 minutes until tender.
Drain the asparagus and spread it on a clean cloth to dry.
Make the sauce
Melt the butter in a clean stewpan over medium heat.
Add the asparagus and stew for 8 to 10 minutes, shaking often.
Dredge in flour and add white sugar.
Pour in boiling water to nearly cover the asparagus and boil until little liquid remains.
Stir in the beaten egg yolks.
Serve
Heap the asparagus in a dish and serve 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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Asparagus + flourtop 12% of all pairsSmell alikemoderateCooked together936 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Asparagus + eggtop 17% of all pairsSmell alikemoderateCooked together1,338 recipes
Shared aroma: 2-nonenal (fatty, 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
- Asparagus
- The main vegetable, cooked first until tender and then finished in the butter sauce.
- Butter
- Provides fat and richness, carrying flavour as the asparagus stews.
- Flour
- Dredged over the asparagus to thicken the liquid into a light coating sauce.
- Egg yolks
- Stirred in at the end to enrich and thicken the sauce to a creamy texture.
The step that matters
Stirring in the beaten egg yolks. Egg yolks thicken when heated gently but can scramble if the liquid is too hot or boiling. Remove the pan from strong heat or stir steadily so the sauce stays smooth.
Swap the asparagus
How well each one fits the dish's main ingredients (butter, flour, sugar, egg):
- Chivefits about as well
- Leekfits about as well
- Shallotfits about as well
- Asparagusthe original
Fit is the average pairing score against butter, flour, sugar, egg. 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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