Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Butter Scotch
Ingredients
Directions
In a pot, combine the light brown sugar and enough water to dampen it, stirring until all the sugar is wet.
Boil the mixture until it forms a rope when dropped from a spoon.
Add the melted butter and continue boiling until it hardens.
Before removing from heat, stir in the vanilla extract.
To test, drop a small amount into cold water; if it becomes brittle, it's done.
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 + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Butter + vanillatop 14% of all pairsSmell alikemoderateCooked together20,050 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Light brown sugar
- Provides the sweetness and the caramel flavor, and its moisture and sugar concentration set the candy as it cooks.
- Melted butter
- Adds fat and richness, softening the texture and contributing to the butterscotch flavor.
The step that matters
Judging the boil by the cold-water test. Sugar candy sets according to how much water has boiled off and how concentrated the sugar becomes. Drop-testing in cold water shows when the candy has reached the brittle stage, so cooking too little leaves it soft and cooking too long makes it hard and possibly scorched.
“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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