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Dessert

Vanilla Fudge

A sweet confection made from sugar, glucose, cream or milk, butter, and vanilla, cooked to a hard candy consistency.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Vanilla Fudge

Ingredients

Directions

The book gives no oven temperature. The 236°F in the steps was added when the recipe was transcribed, as a starting point.

Make the fudge base

  1. In a large kettle, combine sugar, glucose, cream (or milk), and butter.

  2. Heat over medium heat, stirring constantly until it reaches a boil.

  3. Insert a thermometer, ensuring the bulb is covered, and cook until it reaches 236°F to 238°F.

Grain and set

  1. Remove from heat and stir against the sides of the kettle until it begins to grain.

  2. Add vanilla and pour into a buttered shallow square pan or onto a piece of heavy glossy paper.

  3. Let it set for 15 to 20 minutes, then mark into squares with a knife for easy breaking.

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

Sugar
Forms the bulk of the fudge and, once cooled and stirred, crystallizes into its soft, creamy texture.
Glucose
Interferes with large sugar crystal formation, keeping the fudge smooth rather than grainy.
Cream
Adds fat and moisture, giving the fudge a rich, tender body.
Butter
Adds fat for richness and a smoother mouthfeel in the finished fudge.

The step that matters

Stirring after cooking to the target temperature. Stirring the hot syrup against the kettle sides too early or too little affects crystal formation. Stirring only once it has cooled to the right point encourages fine crystals, which give a smooth texture rather than a coarse, sandy one.

“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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