Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Chocolate Filling
Ingredients
Directions
Make the filling
Cut the chocolate into small pieces.
Combine the sugar, cream, butter, salt, and chocolate in a saucepan.
Cook over medium heat until it reaches the soft ball stage (use cold water to test). Do not stir the filling after it begins to boil.
Remove from heat and let cool.
Finish and spread
Once cool, beat until it becomes a thick cream.
Spread the filling on the 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.
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Cream + buttertop 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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Sugar + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Butter + chocolatetop 16% of all pairsSmell alikemoderateCooked together10,543 recipes
Shared aroma: delta-decalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Granulated sugar
- Provides sweetness and, when cooked, forms the structure that sets the filling.
- Cream
- Adds moisture and richness, giving the filling a smooth, soft texture.
- Butter
- Adds fat for a smooth, tender texture and rich mouthfeel.
- Chocolate
- Supplies the chocolate flavor and, with the cream and butter, firms as it cools.
The step that matters
Do not stir after boiling. Stirring a boiling sugar mixture can trigger premature crystallization, making the filling grainy instead of smooth. Testing with cold water confirms the soft ball stage before removing it from heat.
“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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