Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Vegetable Marrow Soup
Ingredients
Directions
Prepare the vegetables
Remove the seeds from the marrow and cut it into pieces.
Chop the onion finely.
Cook and strain
In a saucepan, cook the marrow and onion in water for 20 minutes with butter, pepper, and salt.
Pass the mixture through a sieve back into the saucepan.
Thicken and finish
Mix the fine wheatmeal with the milk until smooth, then add it to the soup.
Allow the soup to simmer for 5 minutes.
Stir in the parsley before serving.
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.
Photo for illustrative purposes only · Contact us to use it
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Marrow
- Forms the body of the soup and gives it a mild, soft texture when cooked.
- Allinson fine wheatmeal
- Thickens the soup as its starch swells with heat, giving it body.
- Milk
- Adds richness and softness, rounding the flavour and smoothing the texture.
- Butter
- Adds fat for a rounder, richer flavour and mouthfeel.
- Onion
- Adds savoury aroma and depth as it softens in the cooking liquid.
The step that matters
Mixing the wheatmeal into the milk until smooth. Flour added directly to hot liquid clumps, because its starch surface gels before it can disperse. Mixing it smoothly into cold milk first lets the starch spread evenly, so the soup thickens without lumps.
Swap the onion
How well each one fits the dish's main ingredients (parsley, milk, butter, pepper):
- Potatofits better
- Carrotfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against parsley, milk, butter, pepper. 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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