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 ↓
To Preserve Orange and Lemon Peel
Ingredients
Directions
Prepare the rinds
Squeeze the juice from the oranges and lemons and remove the insides.
Soak the rinds in cold water for 3 to 4 days, changing the water daily.
Boil the rinds until tender.
Make the syrup and cook
In a clean saucepan, combine loaf sugar and enough water to make a thin syrup.
Boil the rinds in the syrup for 2 to 3 hours, then simmer gently.
Transfer the rinds to a basin and simmer again the next day for 1 hour.
If the syrup is not thick enough, add more sugar.
Store
Store the rinds in a jar; they are ready for use once done.
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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Lemon + sugartop 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).
Lemon and sugar 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
- Oranges
- Their peel provides the bitter, aromatic rind that is candied into the preserve.
- Lemons
- Their peel adds sharp, aromatic citrus flavour to the candied rinds.
- Loaf sugar
- Sugar syrup penetrates the rinds, sweetening them and preserving them as they thicken.
The step that matters
Simmering the rinds in the syrup. Simmering gently keeps the rinds intact while sugar slowly replaces the water in them. Boiling hard can break the rinds apart and make the syrup cloudy or uneven.
“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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