Why it works: Milk and vanilla 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 ↓
Chocolate Cake
Ingredients
Directions
The book says “a rather slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Boil the grated chocolate, milk, and egg yolk until thick.
Let the mixture cool, then stir in the sugar, softened butter, sweet milk, flour, and dissolved baking soda.
Add vanilla extract to taste.
Bake
Pour the batter into a greased baking pan.
Bake in a slow oven at 300°F (150°C) until a toothpick comes out clean.
This can be made into a layer or loaf cake.
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.
-
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).
-
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
- Grated chocolate
- Provides the chocolate flavor and deep color of the cake.
- Egg yolk
- Helps thicken the chocolate mixture and adds richness to the batter.
- Butter
- Adds fat for a tender crumb and rich flavor.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Baking soda
- Reacts with the batter to help it rise and lighten the crumb.
- Sugar
- Sweetens the cake and helps keep it moist and tender.
The step that matters
Boiling the chocolate, milk, and egg yolk until thick. The mixture must thicken fully before cooling, because the egg yolk sets with heat and gives body to the chocolate base. Undercooked yolk stays thin and can weaken the batter's texture.
“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
The 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.
Chocolate Cream171 recipes
Vanilla Ice Cream108 recipes
Chocolate Cookies76 recipes
Chocolate Fudge55 recipes