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 ↓
Salad Dressing, for Immediate Use
Ingredients
Directions
Place a deep dish in snow or cracked ice.
Break in 1 egg and the 2 egg whites, and beat until they begin to rope.
Gradually add 1 pint of olive oil while continuing to beat.
In a separate bowl, mash the 4 hard-boiled egg yolks.
Mix in 1 tablespoon of mustard cooked in 5 tablespoons of water for 30 minutes, 4 tablespoons of vinegar, ½ tablespoon of coarse sea salt, and a dash of cayenne.
Prepare this mixture before starting the first step, then gradually add it to the bowl.
Finally, add ½ cup of sweet cream and the beaten egg whites.
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).
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Olive + mustardtop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Olive + vinegartop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Egg + creamtop 24% of all pairsSmell alikelowCooked together42,166 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Vinegar + creamtop 25% of all pairsSmell alikemoderateCooked together4,064 recipes
Shared aroma: acetic acid (sour, vinegar).
Egg and cream barely smell alike, yet cooks put them together in 42,166 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
- Eggs
- Whole egg and whites build a beaten, ropey foam, while the cooked yolks help bind the oil into the dressing.
- Olive oil
- Supplies the fat that gives the dressing its body, richness and smooth mouthfeel.
- Mustard
- Its natural gums help stabilize the emulsion so the oil stays suspended in the dressing.
- Vinegar
- Adds acidity that brightens the flavor and balances the richness of the oil.
- Sweet cream
- Adds richness and moisture, softening the dressing's texture.
The step that matters
Gradually add the olive oil while beating. Oil must be added slowly so each drop is broken into tiny droplets and absorbed by the egg. Adding it too fast can overwhelm the egg, so the emulsion breaks and the dressing separates.
Swap the mustard
How well each one fits the dish's main ingredients (egg, olive, vinegar, cream):
- Cucumberfits about as well
- Capsicumfits about as well
- Spinachfits about as well
- Mustardthe original
Fit is the average pairing score against egg, olive, vinegar, cream. 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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