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 ↓
Orange Marmalade
Ingredients
Directions
Prepare the fruit
Select sour oranges and weigh them.
Add sugar equal to three-quarters of the oranges' weight.
Remove the peel from the oranges, cutting them into quarters.
Cook the peel in boiling water until soft, then drain.
Scrape off the white part of the peel with a spoon.
Cut the yellow rind into thin strips with a sharp knife.
Divide the oranges into sections, removing seeds and tough skin.
Cook and set
Heat the orange sections in a preserving kettle until boiling.
Gradually add the sugar and cook slowly for one hour.
Add the rind and cook for an additional hour.
Pour the marmalade into glasses.
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
- Sour oranges
- Provide the bitter acidity and pectin that give marmalade its flavour and set.
- Sugar
- Sweetens the marmalade and, with the fruit's pectin and acid, helps it gel as it thickens.
The step that matters
Adding the sugar gradually while the fruit is boiling. Sugar added all at once can cool the mixture and cause uneven dissolving, and slow cooking concentrates the sugar and pectin so the marmalade thickens and sets properly rather than staying runny.
“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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