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
Combine the brown sugar and enough water to moisten it in a large pot.
Add the butter and bring the mixture to a boil.
Boil without stirring for about 45 minutes, or until a drop of the mixture in cold water becomes crisp.
Set
Pour the toffee into pans or onto platters, spreading it as thin as possible.
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 toffee and its sweet, caramel flavor as it cooks.
- Butter
- Adds fat that gives the toffee a rich texture and smooth, tender bite.
The step that matters
Boil without stirring. Stirring can cause sugar to crystallize, leaving a grainy texture instead of smooth toffee. Boiling until a cold-water drop turns crisp indicates the sugar has reached the hard-crack stage needed for a brittle set.
“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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