Why it works: Coffee and egg are a kitchen classic. They rank in the top 29% of all ingredient pairs, and cooks put them together in 3,239 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Boiled Coffee
Ingredients
Directions
Mix the ground coffee with 1 cup of cold water and the eggshell.
Add 6 cups of boiling water and boil for three minutes.
Remove from heat, add another tablespoon of cold water, and let it settle for five minutes.
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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Coffee + eggtop 29% of all pairsSmell alikelowCooked together3,239 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ground coffee
- Provides the coffee flavor and dark color as its compounds dissolve into the hot water.
- Eggshell (in the method)
- Helps the fine coffee grounds clump and settle so the brew is clearer.
The step that matters
Let it settle after removing from heat. Fine grounds stay suspended while the coffee is hot and boiling. Resting it off the heat lets them sink, and the cold water cools the surface slightly. Pouring too early can carry grounds into the cup and make the coffee cloudy and bitter.
“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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