Why it works: Mustard and tarragon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 901 recipes. Both carry methyleugenol, which smells clove, spice. The science ↓
Salad Sauce
Ingredients
Directions
Rub the yolks of the hard-boiled eggs into a bowl.
Add the mustard and mix until smooth.
Stir in the salad oil gradually.
Season with white pepper, cayenne, salt, and a dusting of sugar.
Mix in the thick béchamel, tarragon vinegar, chili vinegar, and common vinegar.
Finally, blend in the cream until well combined.
For fish salads, add a few drops of essence of anchovies and garnish with chopped parsley.
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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Mustard + tarragontop 1% of all pairsSmell alikestrongCooked together901 recipes
Shared aroma: methyleugenol (clove, spice).
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Tarragon + vinegartop 7% of all pairsSmell alikemoderateCooked together2,547 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Sauce + creamtop 9% of all pairsSmell alikemoderateCooked together4,787 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify the oil and cream into a smooth, thick dressing.
- Salad oil
- Adds richness and body by forming an emulsion with the yolks.
- Made mustard
- Helps stabilise the emulsion and adds sharp flavour.
- Thick béchamel sauce
- Thickens the dressing and gives it a creamy body.
- Cream
- Adds smoothness and softens the sharpness of the vinegars.
- Tarragon vinegar
- Provides acidity and a distinct herbal aroma.
The step that matters
Stirring in the salad oil gradually. Adding oil slowly lets the egg yolk and mustard emulsify it into a stable dressing. Pouring too fast can cause the oil to separate and the dressing to break.
Swap the white pepper
How well each one fits the dish's main ingredients (egg, mustard, sugar, sauce, tarragon, vinegar, cream):
- Capersfits better
- Nutmegfits better
- Dillfits better
- White pepperthe original
Fit is the average pairing score against egg, mustard, sugar, sauce, tarragon, vinegar, cream. 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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