Why it works: Butter and milk 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 ↓
Potato Hillocks
Ingredients
Directions
The book says “a hot oven”. The 400°F in the steps is the modern equivalent, not the book's own figure.
Prepare the potato mixture
Whip the boiled potatoes until very light.
Add butter, hot milk or cream, salt, pepper, and beat in the raw egg.
Shape and bake
Shape the mixture into small conical heaps.
Place them in a greased pan in a very hot oven (400°F / 200°C).
As they brown, glaze them with butter.
Serve
Use a cake turner to transfer them to a very hot platter.
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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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).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Boiled potatoes
- Form the base of the mixture, giving the hillocks their soft, light body.
- Raw egg
- Binds the mashed potato so the heaps hold their shape while baking.
- Butter
- Adds richness and, when glazed on, helps the tops brown.
- Hot milk or cream
- Adds moisture and softness, keeping the mashed potato smooth and pliable.
The step that matters
Glazing with butter as they brown. Butter adds flavour and helps the surface brown evenly in a very hot oven. Glazing too early or too late can leave pale or scorched tops.
Swap the potato
How well each one fits the dish's main ingredients (butter, milk, pepper, egg):
- Capsicumfits about as well
- Potatothe original
- Asparagusfits about as well
- Chivefits less well
Fit is the average pairing score against butter, milk, pepper, 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.
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