Why it works: Chocolate and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓
Chocolate Cake
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 300°F (150°C).
Melt the chocolate in hot water over a double boiler.
Make the batter
In a bowl, combine the melted chocolate, beaten eggs, baking powder, and vanilla.
Beat the mixture hard for five minutes or more.
Pour the batter into a greased cake pan.
Bake
Bake for 10 minutes, then gradually increase the oven temperature, watching carefully to avoid overbaking.
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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Chocolate + vanillatop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
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Egg + vanillatop 23% of all pairsSmell alikelowCooked together27,347 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Egg + chocolatetop 24% of all pairsSmell alikemoderateCooked together11,448 recipes
Shared aroma: 2-heptenal (green).
Egg and vanilla barely smell alike, yet cooks put them together in 27,347 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
- Provide structure and moisture, and trap air when beaten, helping the cake rise.
- Baking powder
- Releases gas when moistened and heated, lifting the batter as it bakes.
- Baker's chocolate
- Supplies deep chocolate flavour and fat, adding richness and a fudgy texture.
The step that matters
Bake gently, then increase the heat gradually. Starting at a low heat lets the batter set evenly and rise before the crust firms. Overbaking drives out moisture, leaving the crumb dry and tough, so watching the cake closely matters.
“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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