Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Puree of Sweet Potatoes
Ingredients
Directions
Prepare the potatoes
Boil the sweet potatoes until very tender, then remove the skins.
Press the potatoes through a colander or potato ricer.
Make the sauce
In a double boiler, bring the milk to a boil.
In a separate bowl, rub the butter and flour together until smooth, then add to the boiling milk.
Stir in the pressed sweet potatoes until thoroughly mixed.
Season and serve
Season with salt and pepper to taste.
Serve with toasted crackers or croutons.
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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Milk + buttertop 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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Sweet potato + peppertop 11% of all pairsSmell alikemoderateCooked together1,015 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweet potatoes
- Provide the main bulk, sweetness and smooth body of the puree.
- Milk
- Adds moisture and creaminess, turning the puree silky and rich.
- Butter
- Adds fat, giving richer flavour and a smoother mouthfeel.
- Flour
- Thickens the milk mixture so the puree holds its body.
The step that matters
Rub the butter and flour until smooth before adding to the milk. Flour clumps if it meets hot liquid unmixed. Rubbing it with butter coats the starch granules, so they disperse evenly and thicken the milk without lumps.
Swap the sweet potato
How well each one fits the dish's main ingredients (milk, butter, flour, pepper):
- Potatofits better
- Capsicumfits better
- Chivefits about as well
- Sweet potatothe original
Fit is the average pairing score against milk, butter, flour, 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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