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Dessert

Butter Scotch

A brittle candy made from sugar, molasses, vinegar, butter, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Butter Scotch

Ingredients

Directions

Make the brittle

  1. In a saucepan, combine sugar, vinegar, molasses, and boiling water.

  2. Boil the mixture until it becomes brittle when tested in cold water.

  3. Remove from heat and stir in butter and vanilla extract.

Set and cut

  1. Pour the mixture into a well-buttered pan.

  2. Allow to cool, then cut into squares.

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

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

  2. Sugar + molassestop 11% of all pairs
    Smell alikemoderate
    Cooked together9,225 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

    Shared aroma: guaiacol (smoky, sweet).

  4. Sugar + vinegartop 15% of all pairs
    Smell alikemoderate
    Cooked together20,806 recipes

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

  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

Sugar
Forms the crisp, brittle candy structure as the mixture cooks and hardens.
Molasses
Adds dark color, deep flavor, and sweetness to the brittle.
Vinegar
Adds a little acidity that helps keep the sugar from crystallizing too readily.
Butter
Adds richness and a tender texture to the set candy.

The step that matters

Boil until brittle in cold water. The mixture must reach the hard-crack stage so it sets crisp rather than chewy. Under-boiling leaves it soft, while over-boiling can scorch the sugar and molasses and taste bitter.

Swap the vanilla

How well each one fits the dish's main ingredients (sugar, vinegar, molasses, butter):

  1. Vanillathe original
  2. Figfits about as well
  3. Raisinfits about as well
  4. Applefits about as well

Fit is the average pairing score against sugar, vinegar, molasses, butter. Candidates are from the same food group and used in at least 100 recipes.

“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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