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Drink

Boiled Coffee

A beverage made by boiling coffee with egg shells and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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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

  1. Scald the coffee pot.

  2. Mix ½ cup cold water, crushed egg shells, and coffee together and put into the coffee pot.

  3. Pour on boiling water and let boil for three minutes.

  4. Add the remaining cold water and let stand for five minutes to settle.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Coffee + eggtop 29% of all pairs
    Smell alikelow
    Cooked 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

Coffee
Provides the main flavour and aroma, extracted into the hot water as it boils.
Egg shells or egg
Egg proteins bind to fine grounds and carry them down, so the coffee clears.

The step that matters

Let the coffee stand after adding cold water. The cold water cools the surface slightly and the rest period lets grounds sink with the egg. Pouring too early leaves fine grounds suspended, so the coffee tastes muddy and gritty.

“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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