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Dessert

Chocolate Filling

A sweet chocolate filling made with melted chocolate, milk, powdered sugar, egg yolk, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Chocolate Filling

Ingredients

Directions

Make the base

  1. Melt the chocolate over hot water.

  2. Add ½ cup of the powdered sugar and the milk; mix well.

  3. In a separate bowl, combine the remaining powdered sugar and the egg yolk.

Cook and finish

  1. Cook the mixture in a double boiler until it thickens, stirring for several minutes until smooth.

  2. Cool slightly, add vanilla, and spread the filling.

  3. You can use brown sugar instead of powdered sugar.

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. Milk + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

  2. Chocolate + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together10,020 recipes

    Shared aroma: sotolon (curry, maple).

  3. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

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

  4. Chocolate + sugartop 13% of all pairs
    Smell alikemoderate
    Cooked together15,404 recipes

    Shared aroma: guaiacol (smoky, sweet).

  5. Chocolate + milktop 13% of all pairs
    Smell alikemoderate
    Cooked together9,128 recipes

    Shared aroma: gamma-nonanolactone (coconut, sweet).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Chocolate
Supplies the main chocolate flavour and a rich, fatty body to the filling.
Milk
Adds moisture so the chocolate mixture loosens into a spreadable consistency.
Powdered sugar
Adds sweetness and dissolves smoothly into the chocolate and milk.
Egg yolk
Thickens the filling as it heats, giving it a smooth, set texture.

The step that matters

Cook gently in the double boiler until it thickens. Egg yolk thickens as it heats but can scramble if the mixture gets too hot. Gentle, steady heat with constant stirring keeps the filling smooth.

“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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