Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Spinach Boiled Plain
Ingredients
Directions
Prepare the spinach
Wash the spinach and remove the leaves from the stems.
Without shaking off the water, place the spinach in an agate iron or porcelain saucepan.
Cook
Set the saucepan in a pot of boiling water, cover, and cook for 15 minutes.
Stir well from the bottom.
Add 1 tablespoon of hot water mixed with ½ teaspoon baking soda.
Cover and cook for an additional 10 minutes.
Drain and serve
Drain the spinach in a colander without pressing it initially.
Season with salt, pepper, butter, sugar, and lemon juice.
Gently press out the remaining juice without bruising the spinach.
Serve on a heated platter.
Top with slices of hard-boiled egg.
Serve.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Spinach + lemontop 6% of all pairsSmell alikestrongCooked together1,109 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
-
Spinach + peppertop 6% of all pairsSmell alikemoderateCooked together3,400 recipes
Shared aroma: nonanal (fat, citrus).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 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
- Spinach
- Forms the dish itself, collapsing as it cooks into a soft, tender mass.
- Baking soda
- Raises the cooking water's alkalinity, helping the spinach keep a bright green color.
- Butter
- Adds richness and fat that carries flavor and gives a smooth mouthfeel.
- Lemon juice
- Adds acidity that brightens the flavor and balances the sweetness and richness.
The step that matters
Adding the baking soda water. Baking soda is a strong alkali that can turn spinach mushy and soapy-tasting if overused, so the measured half teaspoon with one tablespoon of water matters.
Swap the spinach
How well each one fits the dish's main ingredients (pepper, butter, sugar, lemon, egg):
- Capsicumfits better
- Asparagusfits about as well
- Spinachthe original
- Shallotfits about as well
Fit is the average pairing score against pepper, butter, sugar, lemon, 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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