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Dessert

Caramel Filling

A caramel filling made from brown sugar, butter, and milk, boiled until thickened and spread on a warm cake.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Caramel Filling

Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Caramel Filling

Ingredients

Directions

Make the filling

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

  2. Boil the mixture until it thickens.

  3. Remove from heat and beat well.

Finish

  1. Spread the filling on the cake while it is still warm.

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

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

  2. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Sugar + milktop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

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

Sugar and milk 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

Brown sugar
Provides sweetness and caramel flavor, and its sugars thicken as the mixture boils.
Butter
Adds fat for a rich, smooth texture and a buttery flavor.
Milk
Supplies liquid that dissolves the sugar and cooks down into a creamy filling.

The step that matters

Boiling until it thickens. Boiling drives off water and lets the sugar concentrate and set as it cools. Stop too early and the filling stays runny; boil too long and it can turn stiff or grainy.

“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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