Why it works: Onion and potato are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Beef Pie
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the filling
Slice the cold roast beef or steak thinly and layer it in a pie dish.
Sprinkle a little flour, pepper, and coarse sea salt over the beef.
Add a layer of chopped tomato or finely chopped onion if available.
Repeat layering with beef and seasoning until the dish is full.
Pour in beef gravy or a little beef drippings and enough water to create gravy.
Make the potato crust
Boil the potatoes until tender.
Mash the boiled potatoes.
Mix the mashed potatoes with milk or cream, butter, and salt.
Spread the potato mixture over the beef as a crust, about 1 inch thick.
Bake
Brush the top with beaten egg.
Bake at 400°F (200°C) for about 20 minutes.
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.
-
Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + potatotop 5% of all pairsSmell alikestrongCooked together2,798 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beef
- Provides the main savory meat filling that the gravy and seasoning flavor.
- Potatoes
- Form a soft, mashed topping that bakes into a crust over the filling.
- Milk or cream
- Adds moisture and richness to the mashed potato topping, keeping it smooth and tender.
- Butter
- Adds fat and richness to the mashed potato topping for flavor and softness.
- Egg
- Brushed on top, it promotes browning and a glossy finish on the crust.
- Beef gravy
- Supplies liquid and savory flavor that moistens the beef layers during baking.
The step that matters
Spread the potato crust evenly over the filling. Mashed potato is thick and can trap air or leave gaps; an even layer seals the filling so moisture stays in while the top browns evenly.
Swap the tomato
The recipe marks tomato as optional. How well each one fits the dish's main ingredients (beef, flour, pepper, onion, potato, milk, butter):
- Chivefits better
- Leekfits about as well
- Capsicumfits about as well
- Tomatothe original
Fit is the average pairing score against beef, flour, pepper, onion, potato, milk, butter. 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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