Why it works: Chocolate and walnut are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 1,548 recipes. Both carry 3-ethyl-2,5-dimethylpyrazine, which smells roasted, nutty. The science ↓
Chocolate Kisses
Ingredients
Directions
The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat your oven to 300°F (150°C).
Make the mixture
Beat the egg whites until very stiff.
Gradually stir in the sugar, melted chocolate, and chopped walnuts.
Bake
Drop spoonfuls of the mixture onto a baking sheet.
Bake very slowly until set.
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 + walnuttop 10% of all pairsSmell alikemoderateCooked together1,548 recipes
Shared aroma: 3-ethyl-2,5-dimethylpyrazine (roasted, nutty).
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Sugar + chocolatetop 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).
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Egg + walnuttop 23% of all pairsSmell alikemoderateCooked together6,037 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + chocolatetop 24% of all pairsSmell alikemoderateCooked together11,448 recipes
Shared aroma: 2-heptenal (green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg whites
- Whipped into a stiff foam that gives the kisses their light, airy structure.
- Sugar
- Sweetens the mixture and stabilizes the whipped whites, helping them hold their shape.
- Chocolate
- Adds flavor and richness, and its fat tenderizes the otherwise dry meringue structure.
- Walnuts
- Add crunch and texture against the soft, chewy interior.
The step that matters
Bake very slowly until set. Low, slow heat dries the meringue out so it sets firm without browning or cracking. Baking too hot can brown the outside and leave the center sticky or collapsed.
Swap the walnut
How well each one fits the dish's main ingredients (egg, sugar, chocolate):
- Pecansfits better
- Almondfits better
- Hazelnutfits about as well
- Walnutthe original
Fit is the average pairing score against egg, sugar, chocolate. 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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