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Dessert

Chocolate Filling

A sweet chocolate filling made with sugar, butter, chocolate, milk, and vanilla extract.

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 filling

  1. In a saucepan, combine sugar, butter, chocolate, and milk.

  2. Boil the mixture until it thickens enough to spread.

  3. Remove from heat and stir in vanilla extract.

Use the filling

  1. Use the filling for either loaf or layer cake.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

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

  5. Sugar + chocolatetop 13% of all pairs
    Smell alikemoderate
    Cooked together15,404 recipes

    Shared aroma: guaiacol (smoky, 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

Sugar
Adds sweetness and helps the filling stay smooth and glossy as it cools.
Butter
Adds fat for a rich, smooth texture and a glossy finish.
German sweet chocolate
Provides the main chocolate flavor and body that thickens the filling as it cools.
Milk
Supplies liquid that melts the chocolate and sugar and is reduced by boiling to thicken.
Vanilla extract
Adds aroma that rounds out the chocolate flavor.

The step that matters

Boil until it thickens enough to spread. Boiling evaporates water and concentrates the sugar and milk solids. Too little boiling leaves the filling runny, while over-boiling makes it stiff and hard to spread once it cools and sets.

“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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