Why it works: Peas and lettuce match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 1,293 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Petits-pois
Ingredients
Directions
Prepare
Shell the peas and select the youngest ones.
Soak the peas in cold water.
Boil the pods in a kettle of water for 30 minutes. Strain the water. Return the water to the kettle and bring it to a boil.
Cook the peas
Drain the peas. Add the peas to the boiling liquid without covering.
Boil for 20 to 30 minutes until tender, then remove from heat immediately. Drain all but ½ cup of the liquid.
Finish and serve
Add butter, pepper, salt, sugar, and cream.
Stir in a pinch of flour (if desired). Boil for 3 minutes.
Pour the mixture over the peas and serve. Optionally, add a head of lettuce.
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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Peas + lettucetop 5% of all pairsSmell alikestrongCooked together1,293 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Flour + lettucetop 11% of all pairsSmell alikestrongCooked together1,236 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
- Fresh peas
- The main vegetable, providing the body and sweet, fresh flavour of the dish.
- Butter
- Adds fat for richness and a smooth, rounded mouthfeel.
- Cream
- Adds richness and silkiness to the cooking liquid.
- Sugar
- Adds sweetness that balances the savoury seasoning.
- Flour
- Optional thickener that helps the liquid cling to the peas.
The step that matters
Remove the peas from heat as soon as they are tender. Peas keep cooking in their residual heat, so leaving them on the boil past tenderness makes them mushy and dull in colour and flavour.
Swap the lettuce
The recipe marks lettuce as optional. How well each one fits the dish's main ingredients (peas, butter, pepper, sugar, cream, flour):
- Leekfits better
- Shallotfits better
- Asparagusfits better
- Lettucethe original
Fit is the average pairing score against peas, butter, pepper, sugar, cream, flour. 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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