Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Rhubarb Jam
Ingredients
Directions
Prepare
Combine rhubarb and sugar in a bowl and let sit overnight.
Make the jam
Drain the syrup from the rhubarb and bring it to a boil until it thickens.
Add the rhubarb to the thickened syrup and boil gently for 15 minutes.
Pour the jam into sterilized jars and seal.
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 + syruptop 6% of all pairsSmell alikestrongCooked together5,842 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Rhubarb + sugartop 18% of all pairsSmell alikemoderateCooked together1,852 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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Rhubarb + syruptop 18% of all pairsSmell alikemoderateCooked together115 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rhubarb
- Provides the main bulk and tart flavour of the jam, and its pectin-light pulp breaks down as it cooks.
- Sugar
- Draws water out of the rhubarb to make syrup, and its concentration helps the jam set and preserves it.
The step that matters
Boiling the thickened syrup before adding the rhubarb. The syrup must be concentrated enough to gel and preserve the fruit. Under-boiling leaves the jam runny, while over-boiling can scorch the sugar and darken the flavour.
Swap the rhubarb
How well each one fits the dish's main ingredients (sugar, syrup):
- Cinnamonfits better
- Gingerfits about as well
- Rhubarbthe original
- Nutmegfits less well
Fit is the average pairing score against sugar, syrup. 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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