Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Iowa Doughnuts
Ingredients
Directions
Make the dough
In a large bowl, combine the sugar, sweet milk, melted butter, and eggs.
In another bowl, mix the sifted flour, baking powder, salt, and vanilla extract.
Gradually add the dry ingredients to the wet mixture until well combined.
Add enough additional flour to make the dough easy to roll out.
Shape and fry
Roll out the dough and cut into doughnut shapes.
Fry the doughnuts in hot oil until golden brown.
Dust with sugar while warm.
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 + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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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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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + vanillatop 12% of all pairsSmell alikemoderateCooked together19,241 recipes
Shared aroma: isobutyraldehyde (malty, green).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Eggs
- Bind the dough and add richness and structure as they set when fried.
- All-purpose flour
- Provides the main structure that holds the doughnut shape during frying.
- Baking powder
- Releases gas that makes the doughnuts rise and turn light and tender.
- Melted butter
- Adds fat for a tender crumb and rich flavor.
- Sweet milk
- Adds moisture so the dough comes together and stays soft.
- Granulated sugar
- Sweetens the dough and helps the surface brown when fried.
The step that matters
Fry the doughnuts in hot oil until golden brown. If the oil is too cool, doughnuts absorb excess oil and turn greasy and heavy; if too hot, the outside browns before the inside cooks. Steady, moderate heat cooks them through with a light, crisp exterior.
Swap the vanilla
How well each one fits the dish's main ingredients (sugar, milk, butter, egg, flour):
- Vanillathe original
- Raisinfits about as well
- Figfits less well
- Coconutfits less well
Fit is the average pairing score against sugar, milk, butter, egg, flour. 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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