Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Steak and Kidney Pie
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the filling
Season the steak pieces with salt, pepper, parsley, and onion, then roll them up and dust lightly with flour.
Fry the kidney slices in a small amount of boiling dripping until lightly cooked, then set aside to cool.
Assemble and bake
Butter a pie dish and layer the meat rolls, followed by fried kidney slices and chopped bacon.
Repeat the layering until all ingredients are used, then pour in enough stock to nearly fill the dish.
Cover the pie and bake in a preheated oven at 350°F (175°C) for 2 hours.
After baking, add more stock if needed, cover with pastry, brush with beaten egg yolk, and bake until the crust is golden brown.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 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).
Flour and egg barely smell alike, yet cooks put them together in 106,462 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
- Steak
- Forms the main meat filling and becomes tender during the long, slow bake.
- Ox kidney
- Adds a rich, meaty flavour and a firmer texture to the filling.
- Bacon
- Adds savoury fat that flavours the filling as it cooks.
- Flour
- Lightly coats the steak rolls, helping to thicken the stock around them.
- Egg yolk
- Gives the pastry crust a glossy, golden-brown colour when brushed on.
The step that matters
Fry the kidney only until lightly cooked. Kidney turns tough and rubbery if overcooked, and it will cook further during the two-hour bake, so brief frying keeps it tender.
Swap the onion
How well each one fits the dish's main ingredients (pepper, parsley, flour, egg):
- Shallotfits better
- Chivefits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against pepper, parsley, flour, 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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