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 ↓
Chocolate Cake
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.
Make the batter
Preheat oven to 350°F (175°C).
In a large bowl, cream sugar and butter until light and fluffy.
Add sweet milk and mix well.
Sift flour and baking powder together, then gradually add to the mixture.
Beat egg whites until stiff peaks form, then fold into batter.
Divide batter into two equal parts; grate German sweet chocolate into one half.
Pour chocolate batter into greased loaf pan or layer pans.
Bake and make the custard
Bake according to marble cake directions or until a toothpick comes out clean.
For custard filling, combine 1 cup sugar, yolks of 2 eggs, 1 tablespoon butter, and 2 teaspoons corn starch dissolved in a little milk in a saucepan.
Add 1 pint milk and cook over medium heat, stirring constantly until thick.
Let custard cool, then spread between cake layers.
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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Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + corntop 13% of all pairsSmell alikemoderateCooked together6,165 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Eggs
- Whites beaten to stiff peaks add lift and an airy, tender crumb to the batter.
- Butter
- Creamed with sugar, it traps air and adds richness and a tender texture.
- Flour
- Provides the structure that holds the cake's crumb together as it bakes.
- Baking powder
- Releases gas during baking so the cake rises and becomes light.
- German sweet chocolate
- Grated into one half of the batter to give the cake its chocolate flavour and marbled color.
- Corn starch
- Thickens the custard filling as it cooks, giving it a smooth, spreadable set.
The step that matters
Cooking the custard until thick. Corn starch thickens only when the custard reaches a full simmer while stirred constantly. Stopping early leaves it runny, and stirring stops it scorching on the base of the pan.
“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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