Why it works: Mustard and capers match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 624 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Mayonnaise Sauce
Ingredients
Directions
Make the mayonnaise
Place 2 egg yolks in a bowl set over a shallow pan of pounded ice.
Add 1 teaspoon salt, a pinch of white pepper, and ½ teaspoon mustard, then mix well with a wooden spoon.
Slowly pour in 1 pint of salad oil, adding a few drops of tarragon vinegar from time to time.
Finish the sauce
Once the sauce is well mixed, add the chopped gherkins, capers, and parsley.
If the sauce is too stiff, add a few drops of lemon juice or more vinegar.
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.
Photo for illustrative purposes only · Contact us to use it
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 + caperstop 1% of all pairsSmell alikestrongCooked together624 recipes
Shared aroma: coumarin (sweet, hay).
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Parsley + lemontop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Tarragon + caperstop 1% of all pairsSmell alikestrongCooked together379 recipes
Shared aroma: coumarin (sweet, hay).
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Tarragon + parsleytop 1% of all pairsSmell alikestrongCooked together1,563 recipes
Shared aroma: estragole (anise, licorice).
-
Mustard + tarragontop 1% of all pairsSmell alikestrongCooked together901 recipes
Shared aroma: methyleugenol (clove, spice).
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 water-based vinegar into a thick, stable sauce.
- Salad oil
- Forms the bulk of the sauce, giving it richness and body as it emulsifies.
- Mustard
- Helps hold the oil and vinegar together in a stable emulsion.
- Tarragon vinegar
- Adds acidity and sharpness, and helps thin the sauce as it is added.
- Gherkins
- Add tangy, acidic crunch and flavour to the finished sauce.
The step that matters
Slowly pour in the oil. Oil must be added slowly so each drop emulsifies into the yolk mixture. Adding it too fast can overwhelm the yolks, so the sauce separates and fails to thicken.
“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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