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Coffee Filling for Cakes

A gelatinous coffee and cream filling for cakes.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cream and gelatin match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,628 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓

Coffee Filling for Cakes

Ingredients

Directions

Make the filling

  1. Brew a very strong coffee.

  2. Stir sugar into the coffee.

  3. Stir in heavy cream until well combined.

  4. Dissolve gelatin in a little milk over hot water, then add to mixture.

  5. Beat eggs thoroughly and pour into hot coffee mixture, stirring well.

Finish

  1. Let filling cool slightly before spreading between cake layers.

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. Cream + gelatintop 7% of all pairs
    Smell alikestrong
    Cooked together1,628 recipes

    Shared aroma: acetic acid (sour, vinegar).

  2. Sugar + gelatintop 7% of all pairs
    Smell alikemoderate
    Cooked together2,778 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Cream + sugartop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

  4. Coffee + creamtop 17% of all pairs
    Smell alikelow
    Cooked together2,339 recipes

    Shared aroma: 2-heptanol (bitter, floral).

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

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

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

What each ingredient does

Strong coffee
Provides the main coffee flavor and most of the liquid in the filling.
Heavy cream
Adds fat for richness and a smooth, soft texture.
Sugar
Adds sweetness and balances the bitterness of the coffee.
Gelatin
Sets the filling so it holds its shape between cake layers.
Eggs
Thicken the filling as they heat and add richness.

The step that matters

Pouring the beaten eggs into the hot coffee mixture. Eggs scramble if they meet very hot liquid too quickly. Stirring constantly while pouring spreads the heat evenly, so the eggs blend in smoothly and thicken the filling instead of turning lumpy.

“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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