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 the boiled herbs and press out the water.
Chop the herbs finely.
Mix the chopped herbs in a dish.
Sprinkle the mixture with coarse sea salt.
Make the batter
In a bowl, combine the flour, beaten eggs, cream, and milk to make a batter.
Pour the batter over the herbs in the dish.
Bake
Cover with a pie crust.
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).
-
Spinach + boragetop 2% of all pairsSmell alikestrongCooked together10 recipes
Shared aroma: coumarin (sweet, hay).
-
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
- Parsley
- Provides the bright, fresh green flavour that defines the pie.
- Spinach
- Adds bulk and a soft, moist texture to the herb filling.
- All-purpose flour
- Thickens the batter so it sets into a firm, sliceable custard.
- Large eggs
- Bind the batter and set during baking to give structure.
- Heavy cream
- Adds richness and fat, giving the batter a smooth, tender set.
- Milk
- Thins the batter and adds moisture for a softer, lighter set.
The step that matters
Pressing out the water from the boiled herbs. Boiled greens hold a lot of water. If it is not pressed out, the excess liquid thins the batter and can leave the filling soggy and prevent it from setting properly.
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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