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Drink

Coffee Milk

A beverage made by boiling coffee with milk, clarified with isinglass, and sweetened with Lisbon sugar.

From an old cookbook · modernised transcription
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Coffee Milk

Why it works: Coffee and milk are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 2,202 recipes. Both carry 4-heptenal, which smells creamy, biscuit. The science ↓

Coffee Milk

Ingredients

Directions

  1. Boil 2 teaspoons of ground coffee in 4 cups of milk for 15 minutes.

  2. Add 1-2 shavings of isinglass and stir to clear.

  3. Boil for a few more minutes, then set aside to let it settle.

  4. Sweeten with real Lisbon sugar to taste.

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.

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.

  1. Coffee + milktop 10% of all pairs
    Smell alikemoderate
    Cooked together2,202 recipes

    Shared aroma: 4-heptenal (creamy, biscuit).

  2. Coffee + sugartop 17% of all pairs
    Smell alikelow
    Cooked together4,344 recipes

    Shared aroma: beta-damascenone (apple, rose).

  3. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

    Shared aroma: 2-nonenal (fatty, green).

Milk and sugar barely smell alike, yet cooks put them together in 77,875 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Milk
Forms the liquid base and provides fat and body that carry the coffee flavour.
Ground coffee
Gives the drink its main coffee flavour and aroma as it steeps in the hot milk.
Isinglass
A fining agent that gathers suspended particles so the milk clears as it settles.
Real lisbon sugar
Adds sweetness, added at the end so the amount can be adjusted to taste.

The step that matters

Letting the milk settle after isinglass. Isinglass works by binding fine particles into clumps that sink. Stirring or moving the pot while it settles keeps those clumps suspended, so the milk stays cloudy and the clearing does not happen.

“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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