Why it works: Flour and hazelnut match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 464 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Hollandaise Sauce
Ingredients
Directions
Make the base
Beat the egg yolks with flour and a small piece of butter.
Add pepper, salt, mace, vinegar, and water.
Heat the mixture in a saucepan, stirring until it just begins to boil.
Finish the sauce
Remove from heat and add a good lump of butter.
Stir continuously in the same direction until the butter is fully incorporated.
Serve the sauce immediately; do not return to heat after adding butter.
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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Flour + hazelnuttop 8% of all pairsSmell alikestrongCooked together464 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + macetop 16% of all pairsSmell alikelowCooked together12,257 recipes
Shared aroma: myristicin (spice, warm).
Flour and butter 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
- Egg yolks
- Emulsify the butter and thicken the sauce as they set gently with heat.
- Butter
- Adds richness and fat that, emulsified with the yolks, gives the sauce its smooth body.
- Flour
- Helps stabilise the yolk mixture so it is less likely to scramble under heat.
- Vinegar
- Adds acidity that brightens the flavour and balances the richness of the butter.
The step that matters
Stir continuously over gentle heat, then keep the sauce off the heat. Egg yolks scramble if they get too hot, and butter added to a sauce that is still too hot can break it. Constant stirring spreads heat evenly and helps the butter emulsify into a smooth sauce.
Swap the mace
How well each one fits the dish's main ingredients (egg, flour, butter, hazelnut, pepper, vinegar):
- Tarragonfits better
- Parsleyfits better
- Nutmegfits better
- Macethe original
Fit is the average pairing score against egg, flour, butter, hazelnut, pepper, vinegar. 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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