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 ↓
Chocolate Cake
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Preheat the oven to 400°F (200°C).
Beat the yolks and whites of the eggs separately.
Mix the cream of tartar thoroughly with the flour.
Combine butter, sweet milk, sugar, and the egg yolks in a bowl.
Add the flour mixture and baking soda, then fold in the egg whites.
Pour the batter into round tins or Eclair tins.
For lady's fingers, add more flour and bake on well-buttered tins.
Make the chocolate icing
To make the chocolate icing, melt the chocolate in a new pint tin dish without scorching.
Stir in milk or cream and water, then mix in granulated sugar.
Boil the icing until fine, then spread it over the cold cakes.
Assemble and set
If using Eclair tins, cover with icing when cold.
Stack the cakes, alternating with chocolate icing, and cover the sides.
Set the cake in a warm oven to harden the icing.
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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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Cream + chocolatetop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Yolks enrich and bind the batter, while separately beaten whites add lift and a light crumb.
- Butter
- Adds fat for a tender texture and rich flavour.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Cream of tartar
- Acidifies the batter so it reacts with baking soda to help the cake rise.
- Baking soda
- Reacts with the acid in cream of tartar to produce gas that leavens the cake.
- Baker's chocolate
- Gives the icing its chocolate flavour and dark colour.
The step that matters
Boil the icing until fine. Boiling the icing to the right point dissolves the sugar fully and sets its texture; undercooked icing stays runny and overcooked icing turns grainy or hard.
“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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