Why it works: Mustard and shallot match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 859 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓
English Salad-dressing
Ingredients
Directions
Place the hard-boiled yolks in a bowl.
Add the mustard, salt, pepper, and minced shallot.
Mash the ingredients with a spoon until smooth.
Gradually mix in salad oil until the mixture reaches a batter-like consistency.
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 + shallottop 1% of all pairsSmell alikestrongCooked together859 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + shallottop 11% of all pairsSmell alikemoderateCooked together5,898 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Egg + shallottop 25% of all pairsSmell alikemoderateCooked together2,380 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Egg + mustardtop 28% of all pairsSmell alikemoderateCooked together9,210 recipes
Shared aroma: (e)-2-octenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hard-boiled egg yolks
- Their lecithin emulsifies the oil into the mixture, giving the dressing body and a creamy texture.
- French mustard
- Its natural emulsifiers help hold the oil and yolk together and add a sharp, tangy flavor.
- Salad oil
- Provides fat that makes the dressing rich, smooth, and thick when emulsified with the yolks.
- Minced shallot
- Adds a mild, sharp aroma and onion-like flavor that brightens the dressing.
The step that matters
Gradually mix in salad oil. Adding the oil slowly lets the egg yolk emulsify it into tiny droplets, producing a smooth, thick dressing. Pouring it in too quickly can cause the oil to separate instead of thickening.
Swap the shallot
How well each one fits the dish's main ingredients (egg, mustard, pepper):
- Horseradishfits better
- Lettucefits about as well
- Spinachfits about as well
- Shallotthe original
Fit is the average pairing score against egg, mustard, pepper. 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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