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 ↓
Escalloped Potatoes
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 and layer
Peel and slice the potatoes.
In a pot, layer the potatoes with butter, salt, and pepper.
Slice the onion and add it to the mixture.
Add milk and bake
Sprinkle bread crumbs on top.
Pour the milk over everything.
Heat the mixture, then bake at 400°F (200°C) for 2.5 hours using both hot radiators.
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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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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 dish and soften into a tender, starchy body as they bake.
- Milk
- Provides the liquid that cooks around the potatoes, creating a creamy, moist sauce.
- Butter
- Adds fat for richness and helps the top brown during baking.
- Onion
- Softens as it bakes, adding savory aroma and mild sweetness.
- Bread crumbs
- Form a top layer that browns and adds a light, crisp texture.
The step that matters
Bake long enough for the potatoes to soften. Potato starch needs sustained heat to swell and turn tender. Stopping early leaves the slices firm and the sauce thin, so the full baking time matters.
Swap the onion
How well each one fits the dish's main ingredients (potato, butter, pepper, bread, milk):
- Capsicumfits better
- Tomatofits better
- Asparagusfits about as well
- Onionthe original
Fit is the average pairing score against potato, butter, pepper, bread, milk. 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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