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 ↓
Delicious 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 the oven to 350°F (175°C).
Beat the butter until creamy.
Stir in the sugar and beat until light.
Add the milk.
Add the flour.
Add the beaten egg whites, mixing well.
Divide the batter into two equal parts.
Grate half a cake of sweet chocolate into one part.
Bake the layers
Pour the chocolate batter into one layer.
Pour the plain batter into another layer.
Bake the layers until a toothpick comes out clean.
Make the custard and assemble
Heat 1 pint of milk with 1 tablespoon of butter until boiling.
Beat 2 eggs with 1 cup of sugar.
Stir in 2 teaspoons of corn starch dissolved in a little milk.
Slowly add the egg mixture to the boiling milk, stirring constantly until thickened.
Spread custard between the layers, alternating the white and dark cakes.
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
- Egg whites add lift and structure to the cake, while whole eggs thicken the custard.
- Butter
- Creams with sugar to give the cake a tender, rich crumb.
- All-purpose flour
- Provides the structure that holds the cake's crumb together.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Sweet chocolate
- Gives the dark layer its chocolate flavour and colour.
- Corn starch
- Thickens the custard as it heats, giving it a smooth, set texture.
The step that matters
Adding the egg mixture to the boiling milk. Pouring the eggs in too fast or without constant stirring can scramble them. Stirring steadily while adding them gently cooks the eggs and lets the starch thicken the custard evenly.
“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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