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 ↓
Spinach Boiled
Ingredients
Directions
Prepare
Remove the stalks and wash the spinach in cold water until free from grit.
Place the spinach in a saucepan with 1 tablespoon of salt and just enough water to cover the bottom.
Cook and finish
Boil uncovered for 15 to 25 minutes, occasionally pressing it down and turning it with a wooden spoon.
Once cooked, rub the spinach through a fine sieve into a stewpan.
Add the butter, season with pepper, sprinkle in the flour, and stir over medium heat for 5 to 6 minutes.
Serve hot, garnished with croutons of fried or toasted bread.
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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Spinach + flourtop 10% of all pairsSmell alikemoderateCooked together1,564 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
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, once cooked and sieved, gives it its smooth body.
- Butter
- Adds richness and fat, carrying flavour and giving the purée a silky mouthfeel.
- Flour
- Stirred in with the butter, it thickens the purée as it cooks, giving it body.
The step that matters
Stirring in the flour and butter. Flour must be cooked for several minutes over heat so it loses its raw taste and thickens the purée evenly. Stopping early can leave a pasty flavour and lumps.
Swap the spinach
How well each one fits the dish's main ingredients (butter, flour, pepper):
- Shallotfits about as well
- Chivefits about as well
- Capsicumfits about as well
- Spinachthe original
Fit is the average pairing score against butter, flour, 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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