Why it works: Sugar and vinegar are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 20,806 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Butter Scotch
Ingredients
Directions
Melt and boil
Combine brown sugar, butter, and vinegar in a tin.
Melt the ingredients over low heat, stirring with a spoon.
Once melted, boil without stirring until the syrup hardens in water.
Pour and finish
Pour the mixture into buttered tins and mark into squares.
Add lemon or vanilla for flavoring just before removing from heat.
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 + 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Brown sugar
- Provides the sweetness and molasses flavor, and forms the hard candy structure as the syrup cools.
- Butter
- Adds fat for a rich flavor and a smooth, tender bite.
- Vinegar
- Adds acidity that helps prevent the sugar from crystallizing into a grainy texture.
The step that matters
Boil without stirring until the syrup hardens in water. Stirring once the sugar has dissolved can encourage crystals to form, leaving the candy grainy. The syrup must reach a high enough concentration to set hard as it cools, which the cold-water test checks.
“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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