Why it works: Potato and onion 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 ↓
Vegetable 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.
Make the filling
Stew the potatoes and onion in a little water until tender.
Add the chopped tomato, season with pepper and salt, and mix in the butter.
Place the vegetable mixture in a small pie dish.
Bake
Cover with pastry and bake at 400°F (200°C) for 30 minutes or until 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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + tomatotop 5% of all pairsSmell alikestrongCooked together2,798 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + peppertop 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
- Potatoes
- Form the bulk of the filling and become soft and starchy when stewed.
- Spanish onion
- Adds savory sweetness and aroma as it softens in the water.
- Tomato
- Adds acidity and moisture to the vegetable filling.
- Butter
- Adds richness and fat, giving the filling a smoother, more rounded flavor.
The step that matters
Stew until fully tender. Potatoes and onion must be fully softened before baking, because the oven only browns the pastry and will not cook firm vegetable pieces through. Using just a little water keeps the mixture thick rather than soupy.
Swap the tomato
How well each one fits the dish's main ingredients (potato, onion, butter, pepper):
- Chivefits better
- Capsicumfits better
- Carrotfits about as well
- Tomatothe original
Fit is the average pairing score against potato, onion, butter, pepper. 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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