Why it works: Coffee and hazelnut work together. They rank in the top 8% of all ingredient pairs, and cooks put them together in 86 recipes. Both carry 2-ethyl-3,5-dimethylpyrazine, which smells roasted, earthy. The science ↓
B-51 I
Ingredients
Directions
Shake and strain the drink.
Layer the drink: pour Kahlua first, then Bailey's, then Frangelico on top.
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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Coffee + hazelnuttop 8% of all pairsSmell alikemoderateCooked together86 recipes
Shared aroma: 2-ethyl-3,5-dimethylpyrazine (roasted, earthy).
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Cream + coffeetop 17% of all pairsSmell alikelowCooked together2,339 recipes
Shared aroma: 2-heptanol (bitter, floral).
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Cream + hazelnuttop 17% of all pairsSmell alikemoderateCooked together332 recipes
Shared aroma: octanal (fat, soap).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bailey's irish cream
- Adds creamy richness and sweetness, forming the body of the layered drink.
- Kahlua coffee liqueur
- Adds coffee flavour and sweetness, and its density helps it sit at the bottom of the layers.
- Frangelico hazelnut liqueur
- Adds nutty, sweet aroma and flavour to the top layer.
The step that matters
Layering the drink. Liqueurs separate into layers based on their sugar and alcohol content, so pouring slowly over the back of a spoon in the stated order keeps the layers distinct. Pouring too fast or in the wrong order causes them to mix.
Swap the hazelnut
How well each one fits the dish's main ingredients (cream, coffee):
- Cocoafits better
- Hazelnutthe original
- Nutsfits less well
- Peanutfits less well
Fit is the average pairing score against cream, coffee. 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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