Why it works: Sugar and butter are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 98,233 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Sugar Toffee
Ingredients
Directions
Make the toffee
In a large pot, combine the brown sugar and butter with enough water to moisten the sugar.
Boil the mixture until it becomes crisp when dropped into cold water, about 45 minutes.
Set and cut
Pour the toffee into pans, spreading it as thinly as possible.
Allow it to cool and harden before cutting into pieces.
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 + 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
- Brown sugar
- Provides the bulk of the candy and, as it cooks down, its caramel flavour and hard set.
- Butter
- Adds fat and richness, giving the toffee a smooth texture and a buttery flavour.
The step that matters
Boiling until crisp in cold water. Toffee sets hard only when the sugar is cooked to the hard-crack stage. Stopping early leaves a sticky, chewy candy, while cooking too long can scorch the sugar and taste bitter. The cold-water test helps judge this point.
“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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