Why it works: Potato and butter are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 6,456 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Maids of Honour
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 potato
Bake the potatoes at 400°F (200°C) until tender.
Cut each potato in half and scoop out the insides.
Pass the potato insides through a sieve into a plate.
Make the sweetbread
In a saucepan, warm the butter and beat it until creamy.
Add the powdered sugar and beat until combined.
Incorporate the whole eggs one at a time, and the yolks two at a time, while beating continuously.
Measure out 6 ounces of the prepared potato and mix it in.
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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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).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Potato + eggtop 29% of all pairsSmell alikemoderateCooked together4,978 recipes
Shared aroma: (e)-2-octenal (fatty, green).
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 and moisture that give the sweetbread its soft, tender body.
- Butter
- Adds fat for richness and a smooth, creamy texture.
- Powdered sugar
- Adds sweetness and dissolves smoothly into the butter for a fine texture.
- Eggs
- Add structure and richness, emulsifying with the butter to bind the mixture.
- Egg yolks
- Add extra fat and richness, helping the mixture set smoothly and stay tender.
The step that matters
Adding the eggs gradually while beating. Adding eggs slowly while beating continuously lets the fat and liquid emulsify. Adding them too fast can cause the mixture to separate or look curdled, which affects the final smooth texture.
Swap the potato
How well each one fits the dish's main ingredients (butter, sugar, egg):
- Sweet potatofits better
- Asparagusfits better
- Leekfits about as well
- Potatothe original
Fit is the average pairing score against butter, sugar, 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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