Why it works: Chocolate and coffee are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 1,497 recipes. Both carry 2,3-butanedione, which smells buttery, creamy. The science ↓
Black-Truffles
Ingredients
Directions
Make the ganache
Place chocolate in food processor and process until chopped.
Combine cream and butter in a 1-cup glass measuring cup and microwave at high for 1½ minutes or until butter is melted and cream begins to boil.
With food processor running, pour hot cream mixture through the food processor tube and process until chocolate melts.
Add liqueur and vodka and process until blended.
Pour chocolate mixture into a medium bowl, cover with plastic wrap and refrigerate overnight.
Shape and store
Shape chocolate mixture into 1-inch balls and roll in walnuts.
Store in an airtight container in the refrigerator.
Let stand at room temperature 2 to 3 hours before serving.
Nutrition, whole recipe (rough)
Counts 4 of 5 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 4 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Chocolate | 1 oz (28g) semisweet | 155 |
| Butter | 1 tbsp (14g) | 102 |
| Cream | 1 tbsp (15ml) heavy | 51 |
| Walnut | 1 walnut half (4g) | 26 |
| Vodka | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Steps grouped into stages for easier reading; the method is the source's own.
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 + coffeetop 5% of all pairsSmell alikemoderateCooked together1,497 recipes
Shared aroma: 2,3-butanedione (buttery, creamy).
-
Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Cream + vodkatop 10% of all pairsSmell alikemoderateCooked together202 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Chocolate + walnuttop 10% of all pairsSmell alikemoderateCooked together1,548 recipes
Shared aroma: 3-ethyl-2,5-dimethylpyrazine (roasted, nutty).
-
Coffee + walnuttop 11% of all pairsSmell alikemoderateCooked together289 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bittersweet chocolate
- Forms the body of the truffle and sets firm as it chills.
- Whipping cream
- Adds moisture and smoothness to the chocolate, keeping the filling creamy.
- Butter
- Adds fat for a silky, rich texture in the chocolate mixture.
- Coffee-flavored liqueur
- Adds flavour and aroma to the chocolate filling.
- Walnuts
- Add crunch and a toasted, nutty flavour that contrasts with the smooth centre.
The step that matters
Refrigerate overnight before shaping. The chocolate must chill long enough to firm up into a mixture that holds its shape when rolled. Shaping too soon gives soft, sticky balls that are hard to handle.
Swap the walnut
How well each one fits the dish's main ingredients (chocolate, cream, butter, coffee, vodka):
- Hazelnutfits better
- Almondfits better
- Peanutfits about as well
- Walnutthe original
Fit is the average pairing score against chocolate, cream, butter, coffee, vodka. 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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