Why it works: Sugar and molasses are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 9,225 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Butter Scotch
Ingredients
Directions
Make the candy
Combine brown sugar, molasses, butter, and vinegar in a saucepan.
Boil the mixture for about 20 minutes, or until it hardens when dropped in cold water.
Set and cut
Pour the hot mixture thinly onto buttered baking sheets.
Cut into squares while still warm.
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.
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Sugar + molassestop 11% of all pairsSmell alikemoderateCooked together9,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Butter + vinegartop 23% of all pairsSmell alikemoderateCooked together13,513 recipes
Shared aroma: isoamyl acetate (banana, pear).
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Molasses + vinegartop 26% of all pairsSmell alikelowCooked together1,253 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Brown sugar
- Provides the bulk of the sweetness and, when boiled, sets into a firm, brittle candy.
- Molasses
- Adds deep flavor, color, and a chewy moisture that softens the set candy.
- Butter
- Adds fat for richness and a smoother, less brittle bite.
- Vinegar
- Its acidity helps prevent the sugar from crystallizing into a grainy texture.
The step that matters
Boiling until it hardens in cold water. Sugar candy depends on reaching the right concentration. Stopping too early leaves it sticky, while cooking too long makes it bitter, dark, and brittle.
“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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