Why it works: Grape and sugar are a kitchen classic. They rank in the top 23% of all ingredient pairs, and cooks put them together in 7,490 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Grape Fruit Marmalade
Ingredients
Directions
Prepare
Slice the grapefruit into thin small pieces.
Add the water and let it stand overnight.
Cook
Boil until the rind seems tender.
Let it stand for 24 hours.
Add the sugar and boil for 30 to 45 minutes, or until it jellies.
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.
Photo for illustrative purposes only · Contact us to use it
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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Grape + sugartop 23% of all pairsSmell alikelowCooked together7,490 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Grapefruit (in the method)
- Provides the bitter peel and pulp that give the marmalade its flavor and body.
- Sugar
- Sweetens the marmalade and helps it set into a jelly as it cooks.
- Water
- Softens the rind and draws out pectin before the sugar is added.
The step that matters
Boil until the rind seems tender. Rind that is not fully softened before the sugar goes in will stay tough and chewy. Sugar hardens the peel, so softening it first matters.
“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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