Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,122 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Old Peas
Ingredients
Directions
Make the peas
In a stew-pan, melt the butter over medium heat.
Add the sliced onion, mint, parsley, and salt; cook until the onions are pale.
Add the peas and enough broth to just float them; simmer until the peas are tender.
Strain the mixture, reserving the liquid, and spread the peas on a dish, removing the onion pieces.
Finish and serve
Thicken the reserved liquid with flour and sugar, then add the peas back in; stir well.
Heat the mixture until steaming and serve.
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.
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Mint + peastop 2% of all pairsAroma overlapmoderateMentioned together1,137 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
-
Mint + parsleytop 7% of all pairsAroma overlapmoderateMentioned together1,198 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + parsleytop 9% of all pairsAroma overlapmoderateMentioned together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Mint + peppertop 10% of all pairsAroma overlapmoderateMentioned together2,372 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Old peas
- Form the main body of the dish and provide its starchy, tender texture.
- Flour
- Thickens the reserved cooking liquid into a light sauce that coats the peas.
- Butter
- Adds fat and richness while softening the onion and herbs.
- Bombay onion
- Adds savoury aromatic flavour as it cooks down pale and sweet.
- Cream or good milk
- Adds fat and smoothness to the thickened liquid, softening its texture.
The step that matters
Thicken the reserved liquid with flour and sugar. Flour must be cooked to thicken properly; if it is added raw or left unstirred it can clump and leave a pasty taste. Stirring well as it heats lets starch swell evenly into a smooth sauce.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (butter, mint, parsley, peas, flour, sugar, pepper):
- Shallotbetter flavor fit
- Carrotbetter flavor fit
- Leekbetter flavor fit
- Onionthe original
Fit is the average pairing score against butter, mint, parsley, peas, flour, sugar, pepper. 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.
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