Why it works: Lemon and sugar 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 ↓
Lemon Marmalade
Ingredients
Directions
Prepare the lemons
Slice the lemons very thinly and remove the seeds.
Combine the sliced lemons with water and let the mixture stand for 24 hours.
Boil the mixture until the lemons are tender.
Let the mixture sit for another 24 hours.
Make the marmalade
Weigh the mixture and add 1 pound of sugar for every pound of fruit.
Boil everything together until the syrup thickens and becomes transparent.
Pour the marmalade into jars and seal tightly.
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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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Lemon and sugar 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
- Lemons
- Provide the bulk of the fruit, along with peel that adds bitterness and aroma.
- Sugar
- Sweetens the marmalade and, as it cooks, helps the syrup thicken and set.
- Water
- Softens the sliced lemons and helps draw out pectin and flavor during soaking and boiling.
The step that matters
Boil everything together until the syrup thickens and becomes transparent. Sugar and pectin only set when enough water evaporates and the syrup reaches a high concentration. Stopping too early leaves a runny marmalade, while overcooking can make it stiff and dark.
“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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