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 ↓
Doughnuts
Ingredients
Directions
Make the batter
Combine sugar, melted butter, salt, sour milk, baking soda, and eggs in a bowl.
Mix gently; do not overmix.
Fry
Heat lard in a deep pan until hot.
Drop spoonfuls of the batter into the hot lard and fry 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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Milk + nutmegtop 15% of all pairsSmell alikemoderateCooked together14,685 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Butter + nutmegtop 16% of all pairsSmell alikemoderateCooked together24,377 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Egg + nutmegtop 17% of all pairsSmell alikelowCooked together24,744 recipes
Shared aroma: acetic acid (sour, vinegar).
Egg and nutmeg barely smell alike, yet cooks put them together in 24,744 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 batter and add structure and richness to the doughnuts.
- Baking soda
- Reacts with the sour milk to produce gas, helping the doughnuts rise.
- Sour milk
- Provides acidity to activate the baking soda and adds moisture.
- Sugar
- Adds sweetness and helps the doughnuts brown in the hot fat.
- Melted butter
- Adds fat for tenderness and flavor.
The step that matters
Mix gently; do not overmix. Overmixing develops gluten in the flour-based batter, which makes doughnuts tough and dense. Gentle mixing keeps the texture tender and light.
Swap the nutmeg
How well each one fits the dish's main ingredients (sugar, butter, milk, egg):
- Cinnamonfits better
- Nutmegthe original
- Gingerfits less well
- Parsleyfits less well
Fit is the average pairing score against sugar, butter, milk, 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.
More doughnuts recipes
You might also like
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.