Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Mayonnaise Dressing
Ingredients
Directions
Make the emulsion
Beat the egg yolk in a bowl.
Add salt, mustard, sugar, and paprika; mix thoroughly.
Stir in lemon juice and vinegar.
Add the oil
Beat vigorously while adding olive oil, one teaspoon at a time, until 6 teaspoons have been added.
Continue adding oil by the tablespoon until a total of 1 cup is used, beating constantly.
Cover and refrigerate until ready to use.
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 + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Lemon + olivetop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Vinegar + olivetop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Mustard + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolk
- Lecithin in the yolk emulsifies the oil and water, holding the sauce together.
- Olive oil
- Forms the fat phase that gives mayonnaise its thick, rich body.
- Lemon juice
- Adds acidity that brightens flavour and helps keep the emulsion stable.
- Vinegar
- Adds acidity that sharpens flavour and helps keep the emulsion stable.
- Mustard
- Acts as an additional emulsifier that helps the oil stay suspended in the sauce.
The step that matters
Adding the oil slowly while beating. Oil must be dispersed into tiny droplets before the yolk can coat them. Adding it too fast overwhelms the yolk, so the mixture breaks and separates into oil and liquid.
Swap the lemon
How well each one fits the dish's main ingredients (egg, mustard, sugar, vinegar, olive):
- Lemonthe original
- Avocadofits about as well
- Cherryfits about as well
- Figfits less well
Fit is the average pairing score against egg, mustard, sugar, 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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