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
Ingredients
Directions
The book says “a sharp oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the dish
Preheat the oven to 400°F (200°C).
Butter a fireproof dish thickly and sprinkle it with chopped parsley and onion.
Add a layer of brown breadcrumbs.
Layer and bake
Place several layers of thinly cut marrow in the dish, sprinkling each layer with breadcrumbs, grated cheese, and seasoning.
Pour in a little gravy.
Finish with a layer of breadcrumbs and cheese, and dot with butter.
Bake until the marrow is tender when tested with a skewer.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Parsley + oniontop 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).
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Butter + oniontop 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
- Vegetable marrow
- Forms the bulk of the dish and turns tender and soft as it bakes.
- Butter
- Adds richness and helps the top brown in the oven.
- Brown breadcrumbs
- Add texture to the layers and help soak up moisture as the dish bakes.
- Grated cheese
- Melts into the layers and browns on top, adding savoury flavour.
- Gravy
- Adds moisture and savoury flavour to the layers as they cook.
The step that matters
Bake until the marrow is tender when tested with a skewer. Marrow is watery and dense, so it needs enough time for its fibres to soften fully. Testing with a skewer shows whether the centre is cooked through rather than just the surface.
Swap the onion
How well each one fits the dish's main ingredients (butter, parsley, cheese, pepper):
- Potatofits better
- Carrotfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against butter, parsley, cheese, 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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