Why it works: Lettuce and mustard 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 ↓
Sweet-bread Salad
Ingredients
Directions
Prepare the sweetbreads
Boil the sweetbreads for 20 minutes.
Drop them into cold milk and wipe dry.
Split the sweetbreads and fry in butter until brown.
Cut them into small pieces and mix with lettuce.
Make the dressing
Make a dressing by beating the egg yolks, vinegar, mustard, salt, and olive oil, adding the oil in a fine stream.
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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Lettuce + mustardtop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lettuce + olivetop 5% of all pairsSmell alikestrongCooked together2,580 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweetbreads
- Provide the tender, mild meat that forms the body of the salad.
- Butter
- Browns the sweetbreads in the pan, adding color and a rich, nutty flavor.
- Egg yolks
- Emulsify the oil and vinegar into a smooth, thick dressing.
- Olive oil
- Adds fat and richness to the dressing, carried by the emulsion.
- Vinegar
- Adds acidity that brightens the dressing and balances the richness.
- Lettuce
- Adds crisp texture and freshness as the base for the salad.
The step that matters
Adding the oil in a fine stream. Oil must be added slowly while beating the egg yolks so it disperses into tiny droplets. Adding it too fast can break the emulsion, leaving a thin, separated dressing.
Swap the lettuce
How well each one fits the dish's main ingredients (milk, butter, egg, vinegar, mustard, olive):
- Chivefits about as well
- Shallotfits about as well
- Capsicumfits about as well
- Lettucethe original
Fit is the average pairing score against milk, butter, egg, vinegar, mustard, olive. 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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