Why it works: Molasses and sugar 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
Combine molasses, sugar, and butter in a saucepan.
Boil the mixture until it snaps in water.
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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Molasses + sugartop 11% of all pairsSmell alikemoderateCooked together9,225 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).
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Molasses + buttertop 30% of all pairsSmell alikelowCooked together8,123 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
- Molasses
- Provides deep flavor and color, and adds moisture that shapes the candy's chewy texture.
- Sugar
- Sweetness and the main structure that sets firm as the mixture cooks down.
- Butter
- Adds fat for smooth richness and a tender, non-grainy bite.
The step that matters
Boiling until it snaps in water. Sugar candy sets by how much water has cooked off. Stopping too early leaves a soft, sticky result, while cooking too long makes it brittle or burnt. The cold-water test shows when the sugar has reached the right concentration.
“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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