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 Souffle
Ingredients
Directions
Prepare the potatoes
Wash and scrub the potatoes in cold water.
Dry the potatoes with a cloth.
Bake the potatoes in a 400°F (200°C) oven for 30 to 45 minutes until soft. Check doneness by inserting a fork; they should be soft inside.
Cut the baked potatoes in half and carefully scoop out the insides, keeping the skins intact.
Rub the potato insides through a wire sieve into a bowl.
Make the base
In a saucepan, combine 2 oz. of butter and ½ cup of milk and bring to a boil.
Season with salt and pepper to taste.
Stir in 3 oz. of the sifted potato mixture until smooth.
Remove the saucepan from heat and let it cool slightly.
Add the eggs one at a time, mixing well after each addition.
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).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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
- Potatoes
- Provide the starchy bulk that gives the soufflé its light, fluffy body.
- Butter
- Adds richness and fat, which softens the texture and carries flavour.
- Milk
- Adds moisture and loosens the potato mixture into a smooth base.
- Eggs
- Provide structure and set, helping the soufflé rise and hold its shape.
The step that matters
Add the eggs one at a time, mixing well after each addition. Eggs must blend fully into the warm base; adding them together can leave lumps or uneven texture, and the mixture should be cooled slightly first so the eggs do not scramble.
Swap the potato
How well each one fits the dish's main ingredients (butter, milk, egg, pepper):
- Capsicumfits about as well
- Potatothe original
- Asparagusfits about as well
- Chivefits less well
Fit is the average pairing score against butter, milk, egg, 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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