Why it works: Milk and butter 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 ↓
White Part
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat your oven to 350°F (175°C).
Make the batter
Beat the egg whites until stiff peaks form.
Cream together the butter and sugar until light and fluffy.
Add the milk and mix well.
Gradually add the flour and baking soda, mixing until smooth.
Fold in the beaten egg whites gently.
Marble and pour
Pour the batter into a greased baking pan, creating a layer of white batter.
Use a spoon to swirl in dark batter to create a marbled effect.
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 + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 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
- Egg whites
- Trapped air from whipping gives the cake a light, airy structure.
- Butter
- Creaming with sugar traps air and adds richness and a tender crumb.
- Sugar
- Sweetens the cake and helps create a soft, tender texture when creamed.
- Flour
- Forms the gluten network that gives the cake its set structure.
- Milk
- Adds moisture and helps the batter blend into a smooth, pourable mixture.
- Baking soda
- Acts as a leavening agent that helps the cake rise.
The step that matters
Fold in the beaten egg whites gently. Whipped egg whites hold air that makes the cake light. Vigorous stirring knocks that air out, leaving a dense cake, so fold with a wide, slow motion until just combined.
“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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