Why it works: Lettuce and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
An Herb Pie
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the herbs
Wash and boil the parsley, spinach, lettuces, mustard greens, cress, borage, and white beet leaves briefly.
Drain and press out excess water, then chop the herbs finely.
Mix the chopped herbs in a dish and sprinkle with coarse sea salt.
Make the batter and bake
In a bowl, combine flour, beaten eggs, cream, and milk to make a batter.
Pour the batter over the herbs, cover with a crust, and bake at 350°F (175°C) 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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Lettuce + mustardtop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Spinach + lettucetop 1% of all pairsSmell alikestrongCooked together427 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Lettuce + boragetop 1% of all pairsSmell alikestrongCooked together12 recipes
Shared aroma: coumarin (sweet, hay).
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Spinach + boragetop 2% of all pairsSmell alikestrongCooked together10 recipes
Shared aroma: coumarin (sweet, hay).
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Spinach + mustardtop 3% of all pairsSmell alikestrongCooked together503 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Bind the batter and help it set into a firm, sliceable custard around the herbs.
- All-purpose flour
- Thickens the batter and gives the pie body and structure.
- Heavy cream
- Adds richness and moisture, producing a smoother, softer set.
- Milk
- Adds moisture and liquid to loosen the batter and help it bake evenly.
- Parsley
- Contributes fresh, green flavour and bulk to the herb filling.
The step that matters
Press out excess water from the herbs. Leftover water from boiled greens dilutes the batter and can make the custard soggy or loose instead of set.
Swap the parsley
How well each one fits the dish's main ingredients (spinach, lettuce, mustard, borage, flour, egg, cream):
- Capersfits better
- Tarragonfits better
- Nutmegfits better
- Parsleythe original
Fit is the average pairing score against spinach, lettuce, mustard, borage, flour, egg, cream. 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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