Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Caramel, or Sugar for Sweets, Etc
Ingredients
Directions
Make the syrup
Combine sugar and cold water in a preserving pan and let it sit for 3-4 minutes.
Place the pan on the fire and bring to a boil, skimming and stirring constantly.
When it starts to bubble and looks white, stir in lemon juice if making caramel.
Test and finish
Dip a stick into the mixture, then plunge it into cold water.
When the sugar drops from the stick and snaps like glass, pour it out immediately.
For sugar spinning, place the pan in another pan of cold water.
Have oiled molds ready.
Drizzle the sugar over them in threads using a fork or spoon.
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 + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Sugar
- Dissolves and caramelizes to form the sweet, brittle structure of the finished candy.
- Lemon juice
- Adds acidity that helps prevent the sugar from crystallizing into a grainy texture.
The step that matters
Watching the sugar stage by the stick test. Sugar candy sets hard only at a specific concentration. Pouring out too early leaves it sticky, while cooking too long makes it bitter and dark. Testing in cold water shows when it snaps like glass.
“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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