Why it works: Chocolate and cocoa work together. They rank in the top 9% of all ingredient pairs, and cooks put them together in 165 recipes. Both carry 2-ethyl-3,6-dimethylpyrazine, which smells roasted, nutty. The science ↓
Chocolate Charlotte Russb
Ingredients
Directions
Prepare the base
Soak the isinglass or gelatine in cold water.
Shave the chocolate and mix it gradually into the cream, adding the soaked isinglass.
Heat the mixture in a porcelain kettle over low heat until the isinglass is dissolved and well mixed.
Remove from heat and let it cool.
Make the custard
Beat the egg yolks and whites together until very light.
Gradually stir the beaten eggs and powdered sugar into the chocolate mixture.
Simmer the mixture over low heat, but do not let it boil.
Remove from heat and whip to a strong froth.
For a stronger chocolate flavor, add cocoa.
Set in moulds
Line your moulds with sponge cake and set them on ice.
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 + cocoatop 9% of all pairsSmell alikemoderateCooked together165 recipes
Shared aroma: 2-ethyl-3,6-dimethylpyrazine (roasted, nutty).
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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Chocolate + creamtop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Chocolate + sugartop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Isinglass or gelatine
- Sets the cream and chocolate mixture into a firm, sliceable structure as it chills.
- Cream
- Provides richness and a smooth, moist texture to the set dessert.
- Egg yolks
- Thicken the mixture and add richness when gently heated.
- Egg whites
- Whipped to a froth, they lighten the mixture and add airy texture.
- Powdered sugar
- Sweetens the mixture and dissolves smoothly into the chocolate base.
- Chocolate
- Provides the main flavor and color of the dessert.
The step that matters
Simmer without boiling. Egg yolks curdle and turn grainy if they get too hot, so the mixture must stay at a gentle simmer and never boil.
Swap the cocoa
The recipe marks cocoa as optional. How well each one fits the dish's main ingredients (chocolate, cream, egg, sugar):
- Almondfits better
- Hazelnutfits better
- Pecansfits better
- Cocoathe original
Fit is the average pairing score against chocolate, cream, egg, sugar. Candidates are from the same food group and used in at least 100 recipes.
“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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