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 ↓
Fish Salad
Ingredients
Directions
Prepare the fish
Remove all bones from the cold fish and separate it into small pieces using 2 forks.
Make the dressing
In a saucepan, combine the beaten egg, sugar, mixed mustard, vinegar, and butter.
Heat the mixture until it thickens to a cream, then pour it over the fish.
Add the chopped lettuce leaves to the fish and mix well.
Serve
Arrange small lettuce leaves on a platter and place a large spoonful of the salad on each leaf.
Top each salad leaf with slices of hard-boiled eggs.
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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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Vinegar + lettucetop 14% of all pairsSmell alikemoderateCooked together2,370 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- The beaten egg thickens the dressing into a cream as it heats.
- Vinegar
- Adds sharpness that balances the sugar and richness of the dressing.
- Mixed mustard
- Adds sharp, pungent flavour to the dressing.
- Butter
- Adds richness and smoothness to the dressing.
- Lettuce leaves
- Chopped lettuce adds crisp texture and freshness to the fish salad.
The step that matters
Heating the dressing until it thickens. Egg proteins set as they heat, thickening the mixture into a cream. Heat too high or too long and the egg can scramble and curdle, so keep the heat gentle and stir constantly.
Swap the lettuce
How well each one fits the dish's main ingredients (fish, egg, sugar, mustard, vinegar, butter):
- Horseradishfits better
- Shallotfits better
- Cucumberfits about as well
- Lettucethe original
Fit is the average pairing score against fish, egg, sugar, mustard, vinegar, butter. 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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