Why it works: Beans and walnut match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 162 recipes. Both carry 2,3,5-trimethylpyrazine, which smells cocoa, roasted. The science ↓
To Make Coffee
Ingredients
Directions
Prepare the beans
Dry the coffee beans in the oven with the door open for 1-2 hours before roasting.
Roast the beans in an iron pan over heat, stirring constantly until light brown.
Add the butter 3 minutes before removing from heat.
Brew
Place ground coffee in a filter.
Wet the filter with cold water.
Let the coffee stand for 5 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 a quart of coffee.
Boil and serve
Mix 1 cup of ground coffee with 1 quart of water and stir in the egg or fish skin.
Boil for 10 minutes.
Pour a cupful out and back into the pot.
Let it stand for 10 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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Beans + walnuttop 8% of all pairsSmell alikestrongCooked together162 recipes
Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).
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Coffee + walnuttop 11% of all pairsSmell alikemoderateCooked together289 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
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Coffee + beanstop 13% of all pairsSmell alikemoderateCooked together289 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Coffee beans
- Roasting develops the flavor compounds that the brewed coffee carries.
- Butter
- Adds fat that softens the coffee's bitterness and gives a rounder mouthfeel.
- Ground coffee
- Supplies the flavor compounds that hot water extracts into the drink.
- Egg
- When used, it binds fine grounds as it cooks so they settle out of the liquid.
The step that matters
Keep the water hot without boiling. Water just below boiling extracts flavor evenly. Boiling water over-extracts the grounds, pulling out harsh bitter compounds and making the coffee taste burnt.
Swap the beans
How well each one fits the dish's main ingredients (coffee, walnut, butter, egg):
- Pecansfits better
- Almondfits better
- Hazelnutfits better
- Beansthe original
Fit is the average pairing score against coffee, walnut, 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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