Why it works: Orange and sugar are a kitchen classic. They rank in the top 20% of all ingredient pairs, and cooks put them together in 19,212 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
To Preserve Oranges
Ingredients
Directions
Prepare
Peel the oranges very thinly or grate off the rind.
Wash the oranges and soak them in cold water for 24 hours, changing the water twice.
Cut the oranges into halves, quarters, or thick slices, removing the seeds.
Cook
In a large pot, add the oranges and the 24 quarts of water, and boil without stirring for 3 hours.
Add the sugar and boil for 1½ hours longer, stirring gently until the sugar is dissolved.
Skim off any foam that forms on the surface.
Rest
Let the preserved oranges sit for several days before using.
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 + sugartop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
Orange and sugar barely smell alike, yet cooks put them together in 19,212 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Oranges
- Provide the fruit and bitter peel that become the preserve itself.
- Sugar
- Sweetens the fruit and helps preserve it, giving it a thick, glossy syrup.
The step that matters
Boil without stirring for 3 hours. Stirring during the long initial boil can break up the fruit and cloud the syrup. Gentle, undisturbed simmering keeps the slices intact and the liquid clear.
“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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