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 ↓
Roast Beef Pie with Potato Crust
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
Preheat the oven to 400°F (200°C).
In a stewpan, combine sliced beef, gravy, butter, onion, pepper, salt, and enough water to create gravy.
Stir in flour to thicken and simmer gently to avoid burning.
Make the topping
Boil potatoes until tender, then mash them smooth with milk and butter.
Assemble and bake
Transfer the stewed meat to a baking dish and layer the mashed potatoes on top.
Brush the potato layer with beaten egg.
Bake in the oven until the top is golden brown.
Serve
Serve with tomato sauce or Worcestershire sauce.
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).
-
Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Beef + potatotop 8% of all pairsSmell alikemoderateCooked together2,052 recipes
Shared aroma: sotolon (curry, maple).
-
Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 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
- Cold roast beef
- Forms the meat filling that gives the pie its main body and savory flavor.
- Gravy from the roast
- Supplies moisture and flavor so the meat stays juicy under the potato layer.
- Flour
- Thickens the simmering gravy so it clings to the meat rather than running off.
- Potatoes
- Form the mashed topping that bakes into a soft layer over the filling.
- Egg
- Brushed on the potato layer, it promotes browning and a glossy golden finish.
The step that matters
Simmer the filling gently after adding flour. Flour thickens the gravy only when it is stirred and kept at a gentle simmer. Higher heat can scorch the bottom of the stewpan and leave a burnt taste in the filling.
Swap the onion
How well each one fits the dish's main ingredients (beef, butter, pepper, flour, potato, milk, egg):
- Chivefits better
- Asparagusfits better
- Capsicumfits about as well
- Onionthe original
Fit is the average pairing score against beef, butter, pepper, flour, potato, milk, 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.
More roast beef pie recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Potato Croquettes255 recipes
Roast Beef211 recipes
Beef Loaf175 recipes