Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Watermelon or Muskmelon Marmalade
Ingredients
Directions
Prepare the rind
Soak the rind in fresh water to remove salt after brining.
Parboil the rind until tender.
Make the marmalade
Make a thin syrup with 12 pounds of sugar and add the rind.
Boil the mixture until the rind breaks apart.
Add the soft peelings of the oranges and lemons, cut into strips.
Stir constantly with a spatula while cooking until thick.
Transfer to wide-mouthed glass jars.
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 + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + orangetop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Watermelon or muskmelon rind
- Provides the bulk of the marmalade and becomes tender and translucent when cooked in syrup.
- Sugar
- Forms the syrup that sweetens the marmalade and thickens it as the liquid reduces.
- Orange peelings
- Adds bitter aromatic oils and a citrus flavor that balances the sweetness.
- Lemon peelings
- Adds acidity and aromatic citrus oils that brighten the flavor and help set the jelly.
The step that matters
Stir constantly while cooking until thick. Sugar-rich mixtures scorch easily on the bottom of the pan, and constant stirring keeps the heat even. Cooking until the mixture thickens lets the sugar concentrate enough to set as it cools.
“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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