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Dessert

Butter Scotch

A hard candy made from sugar, water, butter, and lemon flavoring.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Butter and lemon are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Butter Scotch

Ingredients

Directions

Make the candy

  1. Dissolve the sugar in the water and bring to a boil.

  2. Once boiling, add the butter and enough lemon juice and lemon oil to flavor.

  3. Boil for 20 minutes.

  4. Test by dropping a spoonful into cold water; if it forms a soft ball, it's ready.

Shape and pull

  1. Butter some dishes and pour the mixture into them.

  2. When cool enough to handle, pull the candy until it turns white.

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. Butter + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

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

    Shared aroma: guaiacol (smoky, sweet).

  3. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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 sweet, hard candy base as the syrup cooks and sets.
Butter
Adds richness and a soft, fatty texture to the finished candy.
Lemon juice
Adds acidity that brightens the sweetness of the candy.

The step that matters

Boil for 20 minutes and test with the cold-water soft-ball check. Sugar syrup sets according to how far its water has boiled off. Too short a boil leaves the candy soft and sticky, while too long makes it hard and brittle. The cold-water test shows whether the syrup has reached the right concentration.

Swap the lemon

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

  1. Vanillafits better
  2. Figfits better
  3. Peachfits better
  4. Lemonthe original

Fit is the average pairing score against sugar, 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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