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 of Fish
Ingredients
Directions
Make the dressing
Mash the yolks of the eggs until smooth with the oil.
Add the sugar, salt, mustard, and pepper, mixing well.
Gradually add the vinegar, a few drops at a time.
Set the dressing aside, covered.
Assemble and serve
Cut the fish into strips about an inch long and shred the lettuce.
In a salad bowl, mix the fish and lettuce, then pour over the dressing.
Garnish with rings of the egg whites and serve immediately.
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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Vinegar + mustardtop 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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Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify with the oil to form a smooth, thick base for the dressing.
- Oil
- Provides fat and richness, forming the body of the emulsified dressing with the yolks.
- Vinegar
- Adds acidity that sharpens the dressing and balances the rich oil and yolks.
- Cold boiled fish
- Forms the main protein, providing flavour and substance to the salad.
- Lettuce
- Provides crisp texture and a fresh base for the dressed fish.
The step that matters
Adding the vinegar gradually. Adding vinegar a few drops at a time lets the oil and yolks emulsify slowly. Adding it too fast can break the dressing, leaving it oily and separated.
Swap the lettuce
How well each one fits the dish's main ingredients (fish, egg, sugar, vinegar, pepper, mustard):
- Horseradishfits better
- Capsicumfits about as well
- Cucumberfits about as well
- Lettucethe original
Fit is the average pairing score against fish, egg, sugar, vinegar, pepper, mustard. 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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