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 Cake
Ingredients
Directions
Prepare the dough
Crush the cold boiled potatoes in a bowl.
Add butter and salt, mixing well.
If using, mix in flour and yeast.
Gradually add milk until the mixture forms a very firm dough.
Roll out the dough to 1½ to 2 inches thick.
Cut the dough into circles the size of your frying pan.
Cook
Grease the frying pan and place the dough circles inside.
Flour the top of the dough circles.
Cover with a plate and bake, shaking occasionally to prevent burning.
When half done, turn the cakes over and cover with the plate again.
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 + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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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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Flour + milktop 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
- Cold boiled potatoes
- Provide the starchy base that binds into a soft, tender cake.
- Butter
- Adds fat for richness and a softer, more tender crumb.
- All-purpose flour
- Adds structure and helps the dough hold its shape while cooking.
- Milk
- Adds moisture so the potatoes and flour form a cohesive dough.
- Yeast
- Produces gas that gives the cakes some rise and lightness.
The step that matters
Gradually add milk until the mixture forms a very firm dough.. Adding milk slowly lets you stop once the dough holds together. Too much liquid makes it sticky and hard to shape, while too little leaves it crumbly.
Swap the potato
How well each one fits the dish's main ingredients (butter, flour, milk):
- Potatothe original
- Arrowrootfits about as well
- Leekfits less well
- Shallotfits less well
Fit is the average pairing score against butter, flour, milk. 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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