Why it works: Spinach and pepper are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,400 recipes. Both carry nonanal, which smells fat, citrus. The science ↓
To Cook Spinach
Ingredients
Directions
Prepare the spinach
Wash the spinach and place it in a kettle with enough water to cover.
Add the salt and cook until tender.
Drain the spinach.
Chop the spinach finely.
Finish and serve
Add the milk and butter.
Season with pepper and salt.
Cook for a few minutes.
Transfer the spinach to a dish.
Garnish with thin slices of hard-boiled eggs.
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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Spinach + peppertop 6% of all pairsSmell alikemoderateCooked together3,400 recipes
Shared aroma: nonanal (fat, citrus).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Spinach
- Forms the bulk of the dish and provides its main body and green flavour.
- Milk
- Adds moisture and creaminess, loosening the spinach into a softer, smoother texture.
- Butter
- Adds fat for richness and a silky mouthfeel.
The step that matters
Cook the spinach until tender. Spinach must be cooked fully so its fibres soften and it drains well; undercooked leaves stay tough and watery, while overcooking turns them dull and mushy.
Swap the spinach
How well each one fits the dish's main ingredients (milk, butter, pepper, egg):
- Capsicumfits better
- Potatofits better
- Asparagusfits better
- Spinachthe original
Fit is the average pairing score against milk, butter, pepper, egg. 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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