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Dessert

Ideal Caramel Icing

A sweet glaze made from brown sugar, milk, water, butter, marshmallows, salt, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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 ↓

Ideal Caramel Icing

Ingredients

Directions

Cook the base

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

  2. Set over medium heat and boil slowly, stirring constantly until it begins to boil.

  3. Boil for 10 to 12 minutes, stirring occasionally.

  4. To test, drop a small amount into cold water; it should form a soft, firm ball.

  5. Add marshmallows and continue to cook and stir until dissolved.

Finish and beat

  1. Remove from heat and stir in salt and vanilla.

  2. Cool to lukewarm before beating.

  3. Beat for 15 to 20 minutes until smooth; if it sets too quickly, reheat gently or add a little cream.

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

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

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

  4. Vanilla + buttertop 14% of all pairs
    Smell alikemoderate
    Cooked together20,050 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

Medium brown sugar
Provides sweetness, moisture, and the characteristic caramel flavor of the icing.
Sweet milk
Adds moisture and creaminess, softening the sugar mixture into a smooth icing.
Butter
Adds fat for richness and a smoother, more tender texture.
Marshmallows
Dissolve into the mixture, adding sweetness and helping the icing stay soft and smooth.
Vanilla
Adds aroma that rounds out the caramel flavor.

The step that matters

Cook to the soft-ball stage. Sugar syrup must reach the right concentration to set properly. Stopping early leaves the icing runny and slow to firm, while cooking too long makes it hard and grainy once beaten. The cold-water test shows when the syrup is ready.

“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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