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 ↓
Mashed 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
Peel the potatoes, removing any spots, and place them in cold salted water as you peel.
Once all potatoes are peeled, transfer them to clean cold water and boil until soft, skimming the pot as needed.
Drain the potatoes and mash them finely.
Mash and brown
Add 1 cup of milk or thin cream and a little more salt, or a bit of butter if desired.
Smooth the mashed potatoes in a dish.
Place the dish in a 400°F (200°C) oven or near the fire to brown.
Slice the cold mashed potatoes an inch thick.
Brown the slices in the oven like toast.
Serve with butter.
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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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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Form the main body of the dish, mashing into a soft, starchy base.
- Milk or thin cream
- Adds moisture and richness, making the mash smooth and creamy.
- Butter
- Adds fat and flavour, giving the mash richness and a smooth mouthfeel.
The step that matters
Mashing the potatoes finely. Potatoes must be boiled until fully soft and drained well, since excess water or lumps make the mash watery or stiff. Mashing while still hot helps the starch stay smooth when milk is added.
“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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