Why it works: Flour and egg are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 106,462 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Beefsteak and Kidney Pie
Ingredients
Directions
Make the rough puff pastry.
Mix the flour, salt, and pepper on a plate.
Wipe the steak with a wet cloth.
Wash and skin the kidney, split it open, and remove the core.
Cut the steak into thin slices, dip into the seasoned flour, and place a piece of kidney on each slice.
Add a small piece of fat if desired, then roll up the steak.
Half fill a pie dish with the rolls of steak and kidney.
Add the stock and the hard-boiled egg cut into slices, then place the remaining rolls of steak on top.
Roll out the pastry to about ⅓ inch thick, larger than the pie dish.
Cut off a strip around three sides of the pastry.
Wet the edges of the dish and place the strip around it.
Wet the edge again and place the remaining piece of pastry over the pie.
Trim off the rough edges and decorate the pie.
Cut a hole in the middle of the pie to allow steam to escape while baking.
Brush the pastry with beaten egg.
Roll out the trimmings, cut some leaves, and brush them with egg.
Place the leaves around the hole in the middle of the pie.
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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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + eggtop 33% of all pairsSmell alikelowCooked together50,580 recipes
Shared aroma: 2-nonenal (fatty, 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
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