Why it works: Parsley and lettuce match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and 1,483 recipes mention both. Both carry trans-2-hexenal, which smells green, leafy. The science ↓
Petit Pois a LA Francaise
Ingredients
Directions
In a stew kettle, combine the peas, pickling onions, butter, salt, sugar, parsley, lettuce, and water.
Cover the kettle securely and cook slowly until the peas are tender.
If there is too much liquid, reduce it over high heat.
Add 2 tablespoons of butter and serve hot.
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 aroma chemistry they share, and how many recipes mention both.
-
Parsley + lettucetop 5% of all pairsAroma overlapstrongMentioned together1,483 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Peas + lettucetop 5% of all pairsAroma overlapstrongMentioned together1,293 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Onion + lettucetop 8% of all pairsAroma overlapstrongMentioned together3,562 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + parsleytop 9% of all pairsAroma overlapmoderateMentioned together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Peas + parsleytop 13% of all pairsAroma overlapmoderateMentioned together1,885 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fresh peas
- Form the main body of the stew and provide the sweet, tender texture when cooked.
- Pickling onions
- Add mild onion flavor that softens and sweetens as the stew cooks slowly.
- Butter
- Adds richness and a silky mouthfeel to the finished stew.
- Lettuce
- Releases moisture and body into the liquid as it wilts during slow cooking.
The step that matters
Cover the kettle securely and cook slowly until the peas are tender. A tight lid traps steam so the peas cook gently in their own moisture. Slow cooking keeps them tender and prevents the liquid from evaporating or scorching before the peas soften.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (peas, butter, sugar, parsley, lettuce):
- Shallotbetter flavor fit
- Leekbetter flavor fit
- Beetrootbetter flavor fit
- Onionthe original
Fit is the average pairing score against peas, butter, sugar, parsley, lettuce. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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.
You might also like
Green Peas229 recipes
Green Peas Soup35 recipes
Creamy Lettuce Soup8 recipes
Lettuce Soup8 recipesThe Sunday pairing: one pairing, the chemistry behind it, and how to cook it. No spam, unsubscribe anytime.
Prefer an account? Create a free account for sign-in; Pro adds the full results and chemistry.