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
Make the syrup
Zest the rind of 8 oranges and juice all 12 oranges and the 2 lemons.
Mix the zest and juice together, then strain through a fine sieve.
Boil the quart of syrup until it reaches a caramel stage.
Combine and bottle
Combine the clear juice with the syrup and bottle for use.
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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Lemon + syruptop 20% of all pairsSmell alikelowCooked together2,235 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Orange + syruptop 23% of all pairsSmell alikelowCooked together1,179 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Oranges
- Provide the main flavour and the juice that gives the syrup its body and brightness.
- Lemons
- Add acidity that balances the sweetness and sharpens the citrus flavour.
- Fine syrup
- Supplies sweetness and body, and is boiled to develop a caramel stage.
The step that matters
Boil the syrup to a caramel stage. Sugar darkens and changes flavour quickly near the caramel stage, so it can turn bitter if overcooked. Watching the colour closely keeps the flavour balanced.
Swap the orange
How well each one fits the dish's main ingredients (lemon, syrup):
- Orangethe original
- Limefits about as well
- Raspberryfits less well
- Vanillafits less well
Fit is the average pairing score against lemon, syrup. Candidates are from the same food group and used in at least 100 recipes.
“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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