Why it works: Coffee and walnut work together. They rank in the top 11% of all ingredient pairs, and cooks put them together in 289 recipes. Both carry 2,4-nonadienal, which smells fatty, green. The science ↓
To Make Coffee
Ingredients
Directions
Roast the coffee
Open the pot for one to two hours before roasting the coffee.
Roast the coffee in an iron pan, stirring constantly until it turns light brown.
Add the butter three minutes before removing from heat.
Brew
Place ground coffee in a filter and wet it with cold water. Let it sit for five minutes.
Insert the filter into the pot. Fill the pot with boiling water. Keep the water hot without boiling.
After it runs through, add water to make one quart of coffee.
Combine one cup of ground coffee, the egg or fish-skin, and one quart of water in a coffee pot. Boil for ten minutes. Pour a cupful out and back into the pot. Let it stand for ten minutes 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.
Photo for illustrative purposes only · Contact us to use it
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 + walnuttop 11% of all pairsSmell alikemoderateCooked together289 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
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Walnut + buttertop 15% of all pairsSmell alikemoderateCooked together6,832 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Walnut + eggtop 23% of all pairsSmell alikemoderateCooked together6,037 recipes
Shared aroma: 2-nonenal (fatty, green).
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Coffee + buttertop 23% of all pairsSmell alikemoderateCooked together2,442 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Coffee
- Provides the main flavour and body of the drink once roasted and brewed.
- Butter
- Adds fat that gives the brew a richer, smoother mouthfeel.
- Egg or salt fish-skin
- Added to the boiled coffee so that its proteins help settle the grounds and clarify the liquid.
The step that matters
Roast the coffee until light brown while stirring constantly. Roasting develops the coffee's flavour through browning reactions, but uneven or excessive heat can scorch the beans and make the brew bitter. Constant stirring keeps the beans colouring evenly.
Swap the walnut
How well each one fits the dish's main ingredients (coffee, butter, egg):
- Cocoafits better
- Pecansfits better
- Walnutthe original
- Almondfits about as well
Fit is the average pairing score against coffee, butter, egg. 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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