Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Scalloped Sweet 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 the potatoes
Parboil the sweet potatoes, then peel and slice them thinly crosswise.
Make the sauce and topping
Melt ½ tablespoon of the butter, mix it with the bread crumbs, and set aside.
In a saucepan, melt the remaining butter and add the flour, stirring until blended.
Pour in the milk, stirring constantly until it boils, then add the salt and pepper.
Bake and serve
Layer the sliced potatoes in a baking dish, pouring some sauce over each layer.
Sprinkle the bread crumbs on top and bake at 400°F (200°C) for about 20 minutes, or until the potatoes are tender and the crumbs are browned.
Serve hot.
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.
Photo for illustrative purposes only · Contact us to use it
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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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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Sweet potato + flourtop 9% of all pairsSmell alikemoderateCooked together627 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + breadtop 11% of all pairsSmell alikemoderateCooked together11,466 recipes
Shared aroma: 2-undecenal (sweet).
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Sweet potato + peppertop 11% of all pairsSmell alikemoderateCooked together1,015 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweet potatoes
- Form the bulk of the dish and turn tender and soft as they bake in the sauce.
- Butter
- Adds richness and flavor to the sauce and helps the crumb topping brown.
- Milk
- Forms the base of the sauce, which thickens as it heats and coats the potatoes.
- Flour
- Thickens the butter and milk mixture into a smooth sauce.
- Bread crumbs
- Form a crisp, browned topping over the potatoes.
The step that matters
Stirring the milk until it boils. Flour thickens liquid only when heated, and stirring keeps it from clumping. Stirring constantly until the milk boils helps the sauce become smooth and evenly thick before it goes over the potatoes.
Swap the sweet potato
How well each one fits the dish's main ingredients (butter, milk, flour, bread, pepper):
- Capsicumfits better
- Potatofits better
- Shallotfits about as well
- Sweet potatothe original
Fit is the average pairing score against butter, milk, flour, bread, 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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