Why it works: Vanilla and milk are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Cocoa 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
Cream together the sugar and butter in a mixing bowl.
Add the vanilla extract and cocoa powder, mixing well.
In a separate bowl, combine the sour milk and baking soda, then add to the mixture.
Gradually stir in the flour until fully combined.
Bake
Pour the batter into a greased cake pan and bake at 350°F (175°C) until a toothpick comes out clean.
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.
-
Vanilla + milktop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
-
Butter + milktop 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).
-
Vanilla + cocoa powdertop 10% of all pairsSmell alikemoderateCooked together2,189 recipes
Shared aroma: sotolon (curry, maple).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Sugar
- Sweetens the cake and helps create a tender crumb when creamed with butter.
- Butter
- Adds fat for richness and tenderness, and traps air when creamed with sugar.
- Cocoa powder
- Provides chocolate flavor and deep color to the batter.
- Sour milk
- Its acidity reacts with baking soda to produce gas that lightens the batter.
- Baking soda
- Reacts with the acidic sour milk to release carbon dioxide, helping the cake rise.
- All-purpose flour
- Provides the structure that sets the cake as the batter bakes.
The step that matters
Combining the sour milk and baking soda. The baking soda must meet acidic sour milk to release gas for rising. Adding it to the batter promptly, rather than letting the mixture sit, helps keep the leavening active so the cake rises well.
“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 chocolate cake recipes
You might also like
Vanilla Ice Cream108 recipes
Coconut Pudding26 recipes
Coconut Cake17 recipes
Cocoa Nut Candy11 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.