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
Make the coffee
Mix the ground coffee, eggshells (or egg), and cold water thoroughly.
Add the boiling water and boil the mixture for three minutes.
Move the coffeepot to the back of the stove.
Pour a little coffee into a cup to free the spout from grounds. Pour it back into the coffeepot.
Add 1 cup of cold water and let it stand for ten minutes without boiling.
Serve
Add cream and sugar to the hot cup.
Pour the coffee into the cup.
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 aroma that the water extracts.
- Eggshells or egg
- Clarifies the brew by binding fine grounds so they settle out.
- Boiling water
- Extracts flavor from the coffee grounds during the boil.
The step that matters
Let it stand after adding the cold water. Standing without boiling lets the grounds settle to the bottom so the coffee pours clear. Boiling again would stir the grounds back up and make the cup bitter and cloudy.
“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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