Why it works: Mustard and lemon match in chemistry and in kitchens. They rank in the top 11% of all ingredient pairs, and cooks put them together in 3,816 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓
Mayonnaise Dressing
Ingredients
Directions
In a bowl, combine mustard, salt, fruit sugar, and cayenne.
Slowly whisk in the salad oil until emulsified.
Add lemon juice or vinegar and the egg yolk (or whole egg).
Continue whisking until the dressing is smooth and thick.
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 + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Mustard + sugartop 19% of all pairsSmell alikemoderateCooked together8,424 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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 yolk
- Its lecithin emulsifies the oil and water, holding the sauce together.
- Salad oil
- Forms the bulk of the sauce, providing richness and body as it emulsifies.
- Lemon juice or vinegar
- Adds acidity that brightens flavour and helps stabilise the emulsion.
- Mustard
- Its natural emulsifiers help the oil and water blend and keep the sauce stable.
The step that matters
Adding the oil slowly. Oil must be added gradually while whisking so droplets disperse finely and the egg emulsifier can coat them. Adding it too fast can break the sauce into a greasy, separated liquid.
Swap the mustard
How well each one fits the dish's main ingredients (sugar, lemon, egg):
- Asparagusfits better
- Arrowrootfits better
- Sweet potatofits better
- Mustardthe original
Fit is the average pairing score against sugar, lemon, egg. 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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