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 ↓
Orange Syrup
Ingredients
Directions
Prepare
Squeeze the juice from the oranges through a sieve.
In a pot, combine the orange juice, sugar, grated orange peel, and lemon juice.
Cook and finish
Boil the mixture for 15 minutes, skimming off any scum that rises.
If the syrup is not clear, strain it.
Bottle the syrup and seal it tightly for long-term storage.
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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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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Orange + sugartop 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
- Sugar
- Provides sweetness and body, and thickens the juice into a syrup as it cooks.
- Orange juice
- Forms the liquid base and supplies the main citrus flavor.
- Lemon juice
- Adds acidity that brightens the sweetness and balances the orange flavor.
- Orange peel
- Contributes aromatic citrus oils for fragrance and flavor.
The step that matters
Skimming the boil. Scum that rises during boiling contains impurities and proteins that would cloud the syrup and spoil its appearance. Removing it as it forms keeps the syrup clear, which is why the step matters before any straining.
“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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