Why it works: Walnut and pecans match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 634 recipes. Both carry 2-undecenal, which smells sweet. The science ↓
Nut Sandwiches
Ingredients
Directions
Make the filling
In a bowl, combine grated chocolate and sweet cream until smooth.
Stir in chopped walnuts and pecans until thick.
Assemble and serve
Spread the mixture between slices of buttered white bread.
Press the sandwiches together and cut into rounds using a biscuit cutter.
Roll the rounds in powdered sugar before serving.
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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Walnut + pecanstop 4% of all pairsSmell alikestrongCooked together634 recipes
Shared aroma: 2-undecenal (sweet).
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Chocolate + pecanstop 9% of all pairsSmell alikemoderateCooked together804 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
-
Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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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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Chocolate + creamtop 11% of all pairsSmell alikemoderateCooked together5,466 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
- Grated unsweetened chocolate
- Melts into the cream to form the rich, smooth body of the filling.
- Sweet cream
- Adds moisture and fat so the chocolate blends into a spreadable mixture.
- Chopped walnuts
- Add crunch and a toasty, bitter note that contrasts the sweet chocolate.
- Chopped pecans
- Add extra crunch and buttery flavour to the nut layer.
The step that matters
Stir in the nuts until thick. The chocolate and cream must be fully smooth before the nuts go in; if the chocolate is still grainy or cold, the filling will not thicken evenly and may separate or spread unevenly on the bread.
Swap the walnut
How well each one fits the dish's main ingredients (chocolate, cream, pecans, bread, sugar):
- Almondfits better
- Hazelnutfits about as well
- Peanutfits about as well
- Walnutthe original
Fit is the average pairing score against chocolate, cream, pecans, bread, 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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