Why it works: Rhubarb and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 1,852 recipes. Both carry 1-penten-3-one, which smells fish, pungent. The science ↓
Fine Rhubarb Jam
Ingredients
Directions
Prepare
On a dry day, clean the rhubarb stalks without washing them.
Peel off the skin and coarse fibers, then slice the stalks thin.
Make the jam
In a pan, combine the rhubarb with ½ pound of the sugar and let it sit until the sugar dissolves.
Boil the mixture slowly until it becomes a smooth pulp.
Remove from heat and gradually stir in the remaining sugar until melted.
Boil quickly until the jam thickens and the bottom of the pan is visible when stirred, about 1.5 to 2.25 hours.
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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Rhubarb + sugartop 18% of all pairsSmell alikemoderateCooked together1,852 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rhubarb
- Provides the main fruit body and a tart flavor that balances the sugar.
- Powdered sugar
- Sweetens the jam and, as it concentrates, helps the mixture set and preserves it.
The step that matters
Boil until the jam thickens. The jam sets when enough water evaporates that the sugar and rhubarb pectin form a gel. Stopping too early leaves a runny jam, while overcooking can scorch sugar on the pan base.
“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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