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Dessert

Carmel Icing

A sweet icing made from dark brown sugar, granulated sugar, boiling water, cream, butter, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Carmel Icing

Ingredients

Directions

Cook the syrup

  1. Boil dark brown sugar and boiling water until it breaks like molasses candy when dropped in cold water.

  2. Remove from heat and stir in butter and cream.

Thicken and spread

  1. Add vanilla and stir until thick.

  2. Spread the icing when it is cold.

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 + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

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

  3. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

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

  4. Butter + vanillatop 14% of all pairs
    Smell alikemoderate
    Cooked together20,050 recipes

    Shared aroma: guaiacol (smoky, sweet).

  5. Cream + vanillatop 15% of all pairs
    Smell alikelow
    Cooked together12,301 recipes

    Shared aroma: 2-nonanone (fruity, floral).

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

Dark brown sugar
Provides the sweetness and caramel flavour, with molasses adding depth and colour.
Cream
Adds richness and a softer, creamier texture to the icing.
Butter
Adds fat for a smooth, glossy texture and rounder flavour.
Vanilla
Adds aroma that rounds out the caramel flavour.

The step that matters

Boil until it breaks like molasses candy. The final texture depends on how much water has boiled off and how concentrated the sugar becomes. Stopping too early leaves the icing thin and slow to thicken, while boiling too long makes it hard, grainy, or brittle once cooled.

“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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