Why it works: Red currant and sugar are a kitchen classic. They rank in the top 26% of all ingredient pairs, and cooks put them together in 1,156 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓
To Preserve Raspberries
Ingredients
Directions
Prepare
Gather raspberries on a dry day.
Make the preserve
In a preserving pan, layer raspberries, red currant juice, and sugar alternately.
Shake the pan frequently until the sugar dissolves.
Gently stir the mixture with a spoon, removing fruit from the sides.
Once it boils, skim off any foam and let it boil for 25 minutes.
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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Red currant + sugartop 26% of all pairsSmell alikelowCooked together1,156 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Raspberries
- Provide the main fruit flavour and bulk of the preserve.
- Red currant juice
- Adds tartness and extra fruit flavour that balances the sweetness.
- Sugar
- Sweetens and helps preserve the fruit by drawing out moisture and thickening the syrup.
The step that matters
Letting the sugar fully dissolve before boiling. If sugar crystals remain when the mixture boils, the syrup can crystallise or scorch on the pan base. Shaking the pan and stirring gently helps the sugar dissolve evenly before the fruit is boiled.
“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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