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Dessert

Butter Scotch

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

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

  1. In a saucepan, melt the butter over low heat.

  2. Add the molasses, sugar, vanilla, and vinegar.

  3. Stir until the sugar is dissolved and the mixture is smooth.

  4. Bring to a boil and cook for a few minutes until thickened.

Cool and serve

  1. Remove from heat and let cool before serving.

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. Molasses + sugartop 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. Butter + sugartop 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

Butter
Adds richness and a rounded, buttery flavor, and helps the sauce feel smooth.
Molasses
Supplies deep sweetness, dark color, and the characteristic caramel-like flavor.
Sugar
Provides sweetness and, as it cooks, thickens the mixture into a sauce.
Vinegar
Adds acidity that balances the sweetness and helps keep the sugar from crystallizing.
Vanilla
Adds aroma that rounds out the sweet, molasses-heavy flavor.

The step that matters

Cooking after the boil. Once the mixture boils, the sugar concentration rises as water evaporates, so it thickens quickly. Stopping too early leaves it thin, while cooking too long can make it stiff or scorch on the bottom of the pan.

Swap the vanilla

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

  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 butter, molasses, sugar, vinegar. 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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