Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Butter Scotch
Ingredients
Directions
Make the candy
In a cast-iron pan, combine sugar, corn syrup, vinegar, water, and butter.
Cook over medium heat until the mixture becomes brittle when dropped in cold water.
Cool and cut
Pour the mixture onto buttered plates and let it cool.
Once cooled, cut into squares.
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 + syruptop 6% of all pairsSmell alikestrongCooked together5,842 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Corn + buttertop 14% of all pairsSmell alikemoderateCooked together7,345 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
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Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Corn + syruptop 17% of all pairsSmell alikelowCooked together1,678 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sugar
- Provides sweetness and forms the hard, brittle structure as the mixture cooks and cools.
- Corn syrup
- Interferes with sugar crystal formation, keeping the candy smooth rather than grainy.
- Vinegar
- Adds acidity that helps break down some sucrose, further discouraging graininess.
- Butter
- Adds richness and a rounded, buttery flavor to the finished candy.
The step that matters
Cooking until brittle in cold water. As water boils off, the sugar concentration rises until the candy sets hard on cooling. Stopping too early leaves it soft and sticky, while cooking too long can scorch it and make it bitter.
“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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