Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Rhubarb Jam
Ingredients
Directions
Prepare
Layer rhubarb, figs, orange peel, lemon rind, and sugar in a bowl.
Repeat layers until all ingredients are used.
Cover and let stand overnight.
Cook and jar
In the morning, boil the mixture for about one hour until thick.
Pour into jelly glasses and let cool.
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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Orange + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Rhubarb + orangetop 5% of all pairsSmell alikemoderateCooked together299 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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Fig + orangetop 6% of all pairsSmell alikestrongCooked together407 recipes
Shared aroma: beta-damascenone (apple, rose).
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Rhubarb + figtop 6% of all pairsSmell alikestrongCooked together48 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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Rhubarb + lemontop 7% of all pairsSmell alikestrongCooked together546 recipes
Shared aroma: acetic acid (sour, vinegar).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rhubarb
- Provides the tart flavor and fruit body that forms the bulk of the jam.
- Dried figs
- Add concentrated sweetness and body that thickens the jam as it cooks.
- Sugar
- Sweetens the jam and, as it boils down, helps it thicken and set.
- Lemon
- Adds acidity that brightens the flavor and supports gelling.
The step that matters
Boil until thick. Pectin and sugar set only when enough water has evaporated and the mixture reaches a high enough concentration. Stopping too early leaves a runny jam, while overcooking can make it stiff or scorch the sugar.
Swap the fig
How well each one fits the dish's main ingredients (rhubarb, orange, lemon, sugar):
- Limefits better
- Vanillafits better
- Blueberryfits about as well
- Figthe original
Fit is the average pairing score against rhubarb, orange, lemon, sugar. Candidates are from the same food group and used in at least 100 recipes.
“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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