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 in Croustades
Ingredients
Directions
Wash the spinach thoroughly in plenty of water, changing the water frequently to remove grit.
Cook the spinach covered in the water that clings to the leaves, turning occasionally to prevent burning.
Once tender, chop the spinach and season with salt and pepper. Cook uncovered to absorb excess liquid.
Cut the stale bread into diamonds, squares, or circles. Dip the sides (except the top) in melted butter.
Toast the bread in a hot pan until golden brown. Remove crumbs and fill with the cooked spinach.
Mix in chopped hard boiled eggs and garnish with pressed white and yolk through a sieve.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Egg + breadtop 13% of all pairsSmell alikemoderateCooked together22,662 recipes
Shared aroma: (e)-2-octenal (fatty, green).
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Spinach + breadtop 15% of all pairsSmell alikemoderateCooked together466 recipes
Shared aroma: 2-undecenal (sweet).
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Pepper + breadtop 16% of all pairsSmell alikemoderateCooked together20,964 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the spinach
How well each one fits the dish's main ingredients (pepper, egg, bread, butter):
- Capsicumfits better
- Asparagusfits better
- Chivefits about as well
- Spinachthe original
Fit is the average pairing score against pepper, egg, bread, butter. Candidates are from the same food group and used in at least 100 recipes.
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