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 ↓
Mayonnaise Salad Dressing
Ingredients
Directions
In a bowl, mash the yolks of the hard‑boiled eggs.
Add the syrup, cayenne pepper, salt, mustard, and condensed milk.
Mix well to combine.
Gradually add the tarragon vinegar and olive oil, alternating between the two.
Rub the mixture well to form a perfect emulsion.
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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Syrup + condensed milktop 2% of all pairsSmell alikestrongCooked together118 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Pepper + tarragontop 5% of all pairsSmell alikestrongCooked together2,399 recipes
Shared aroma: estragole (anise, licorice).
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Tarragon + vinegartop 7% of all pairsSmell alikemoderateCooked together2,547 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Their lecithin emulsifies the oil and vinegar, holding the dressing together as a smooth sauce.
- Olive oil
- Provides the fat that gives the dressing its body and rich mouthfeel.
- Tarragon vinegar
- Adds acidity that sharpens flavour and balances the richness of the oil.
- Mustard
- Contains emulsifying compounds that help stabilise the oil in the mixture.
- Condensed milk
- Adds sweetness and creamy body to the dressing.
The step that matters
Adding the vinegar and olive oil. If the oil is poured in too quickly, the yolk mixture cannot absorb it and the emulsion breaks into a greasy, separated sauce. Adding it gradually, alternating with the vinegar, lets the egg yolk coat each droplet and keeps the dressing smooth.
Swap the mustard
How well each one fits the dish's main ingredients (egg, syrup, pepper, condensed milk, tarragon, vinegar, olive):
- Capsicumfits about as well
- Mustardthe original
- Cucumberfits about as well
- Shallotfits about as well
Fit is the average pairing score against egg, syrup, pepper, condensed milk, tarragon, vinegar, olive. 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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