Why it works: Vanilla and cinnamon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 5,287 recipes. Both carry 4-methoxybenzaldehyde, which smells sweet, anise. The science ↓
Dark Chocolate Cake
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the chocolate custard
Melt the chocolate over hot water.
Gradually add the milk, stirring until smooth.
Add the sugar and egg.
Cook until thickened, stirring constantly.
Cool the mixture.
Add vanilla.
Make the batter
Cream the butter.
Add the sugar.
Add the beaten egg yolks and the chocolate mixture.
Beat thoroughly.
Mix the dry ingredients.
Sift the dry ingredients.
Add them alternately with the sour milk.
Fold in the stiffly beaten egg whites.
Bake
Turn the batter into greased layer pans.
Bake at 350°F (175°C) for 35 to 40 minutes.
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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Vanilla + cinnamontop 1% of all pairsSmell alikestrongCooked together5,287 recipes
Shared aroma: 4-methoxybenzaldehyde (sweet, anise).
-
Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
-
Chocolate + vanillatop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Dark chocolate
- Provides the chocolate flavor and deep color of the cake.
- Butter
- Adds fat for tenderness and a rich, moist crumb.
- Eggs
- Add structure and richness, and the whites lighten the batter when folded in.
- Sour milk
- Its acidity reacts with the leavening to help the cake rise and stay tender.
- Baking soda
- Reacts with the acidic sour milk to produce gas that makes the cake rise.
- Light brown sugar
- Adds sweetness, moisture, and a caramel-like depth of flavor.
The step that matters
Fold in the stiffly beaten egg whites. Egg whites hold air that gives lift. Folding gently keeps that air in the batter; overmixing deflates it and leaves a denser cake.
“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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