Why it works: Kale and lemon match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 226 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Sea-Kale
Ingredients
Directions
Boil and serve
Boil young sea-kale shoots until tender.
Serve on buttered toast with melted butter poured over.
Make the sauce
For the sauce, rub 2 to 4 ounces of butter into flour until smooth.
Stir in egg yolks and a squeeze of lemon juice.
Serve sauce alongside sea-kale, but do not pour over.
Fried version
For a fried version, cut cold sea-kale into pieces, dip in batter, and fry until golden.
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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Kale + lemontop 4% of all pairsSmell alikestrongCooked together226 recipes
Shared aroma: coumarin (sweet, hay).
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Kale + flourtop 6% of all pairsSmell alikestrongCooked together147 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 + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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
- Butter
- Adds richness and flavour, and carries the sauce's smooth, creamy body.
- Flour
- Thickens the butter into a smooth base that helps hold the sauce together.
- Egg yolks
- Emulsify with the butter and thicken the sauce as they set gently with heat.
- Lemon juice
- Adds acidity that brightens the rich butter and yolk sauce.
- Batter for frying
- Forms a crisp, golden coating when the cut shoots are fried.
The step that matters
Stirring in the egg yolks and lemon juice. Egg yolks can curdle or scramble if the sauce is too hot, so they should be added gently and the sauce kept warm rather than boiling. Lemon juice added at the same time can make the sauce thin or split, so a small squeeze is enough.
Swap the kale
How well each one fits the dish's main ingredients (butter, flour, egg, lemon):
- Shallotfits better
- Arrowrootfits better
- Leekfits better
- Kalethe original
Fit is the average pairing score against butter, flour, egg, lemon. 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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