Why it works: Mustard and lettuce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Mayonnaise Fish
Ingredients
Directions
Prepare
Cut the cold boiled fish into pieces about 1 inch long.
Make the dressing
In a bowl, mix the egg yolks with salad oil or butter until smooth.
Add salt, pepper, mustard, sugar, and vinegar to the mixture and beat until light.
Just before serving, gently fold in the frothed egg white.
Serve
Serve the fish in a glass dish, mixing half the dressing with it.
Spread the remaining dressing on top and garnish with lettuce leaves.
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 + lettucetop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + lettucetop 9% of all pairsSmell alikemoderateCooked together4,037 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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 vinegar into a smooth, thick dressing.
- Salad oil or butter
- Adds richness and fat that gives the dressing a smooth, creamy body.
- Vinegar
- Adds acidity that brightens the dressing and balances the rich fat.
- Raw egg white
- Whipped into froth to lighten the dressing and add airy volume.
- Mustard
- Helps stabilize the emulsion and adds a sharp, tangy flavor.
- White sugar
- Adds sweetness that rounds out the vinegar's sharpness.
The step that matters
Folding in the egg white. The frothed egg white must be folded in gently just before serving. Stirring or beating it hard deflates the foam, so the dressing loses the airy lightness the froth provides.
Swap the lettuce
How well each one fits the dish's main ingredients (fish, egg, butter, pepper, mustard, sugar, vinegar):
- Horseradishfits better
- Capsicumfits better
- Shallotfits about as well
- Lettucethe original
Fit is the average pairing score against fish, egg, butter, pepper, mustard, sugar, vinegar. 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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