Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
A Swiss Mayonnaise
Ingredients
Directions
Make the sauce
Beat the butter into a cream.
Gradually add the butter to the pounded yolks until smooth.
Slowly mix in the salad oil until fully incorporated.
Add salt and vinegar to taste for acidity.
Assemble the dish
Carve the boiled fowls neatly and arrange the inferior parts on a large plate.
Spread a thick layer of sauce over the fowl parts.
Layer the remaining joints symmetrically on top.
Build a pyramid shape with the fowl and decorate with egg whites and halved lettuce hearts.
Place whole boiled bantam or plover eggs around the base.
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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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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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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Lemon + lettucetop 9% of all pairsSmell alikestrongCooked together1,559 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Vinegar + lettucetop 14% of all pairsSmell alikemoderateCooked together2,370 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Act as the emulsifier that holds the oil and butter together in a smooth sauce.
- Butter
- Adds richness and a creamy body to the sauce.
- Salad oil
- Supplies the fat that builds the thick, stable body of the sauce.
- Vinegar
- Adds acidity that cuts the richness of the fat and sharpens the flavour.
The step that matters
Adding the salad oil slowly. The oil must go in gradually so it breaks into tiny droplets that the egg yolk's lecithin can coat and suspend. Adding it too fast overwhelms the yolk, and the sauce splits into a greasy, separated mixture that cannot be rescued easily.
Swap the lemon
The recipe marks lemon as optional. How well each one fits the dish's main ingredients (butter, egg, vinegar, pepper, lettuce):
- Lemonthe original
- Avocadofits about as well
- Limefits about as well
- Cherryfits about as well
Fit is the average pairing score against butter, egg, vinegar, pepper, lettuce. 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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