Why it works: Flour and nutmeg are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 18,623 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Sour Milk Doughnuts
Ingredients
Directions
Make the dough
Combine sour milk, sour cream, eggs, and sugar in a large bowl.
Add baking soda and baking powder, mixing well.
Gradually add flour until the dough is firm enough to roll out.
Flavor the dough with nutmeg, cinnamon, or vanilla as desired.
Shape and fry
Roll out the dough and cut into doughnut shapes.
Fry in hot oil until golden brown.
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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Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Cream + nutmegtop 13% of all pairsSmell alikemoderateCooked together7,920 recipes
Shared aroma: acetic acid (sour, vinegar).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
Milk and flour barely smell alike, yet cooks put them together in 78,219 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
- Sour milk
- Its acidity reacts with the baking soda to produce gas, helping the doughnuts rise.
- Sour cream
- Adds fat and moisture, giving the dough a tender crumb.
- Eggs
- Add structure and richness, binding the dough together.
- Sugar
- Adds sweetness and helps the doughnuts brown when fried.
- Baking soda
- Reacts with the acidic sour milk to leaven the dough.
- Baking powder
- Provides additional lift so the doughnuts puff in the hot oil.
The step that matters
Gradually add flour until the dough is firm enough to roll out. Too much flour makes the doughnuts dense and tough, while too little leaves the dough sticky and hard to shape. Adding it gradually lets you stop once the dough holds its shape.
Swap the nutmeg
How well each one fits the dish's main ingredients (milk, cream, egg, sugar, flour):
- Nutmegthe original
- Cinnamonfits about as well
- Jalapenofits less well
- Turmericfits less well
Fit is the average pairing score against milk, cream, egg, sugar, 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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