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 Jelly
Ingredients
Directions
Prepare the fruit
Grate the rind of the oranges and lemons.
Squeeze and strain the juice of the oranges and lemons.
Make the syrup
In a pot, combine the juice, sugar, and water, and boil until it almost candies.
Set the jelly
Prepare 1 quart of isinglass jelly using 2 ounces of isinglass.
Add the syrup to the isinglass jelly and boil once more.
Strain the jelly and let it settle before pouring it into a mold.
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
- Isinglass
- Gelatin-like protein that sets the juice into a firm jelly as it cools.
- Lump sugar
- Sweetens the jelly and, boiled down, thickens the syrup and adds body to the set.
- Seville oranges
- Supply the main bitter-sharp citrus juice and aromatic rind flavor.
- China oranges
- Add sweet citrus juice and aroma that balance the sharper fruits.
- Lemons
- Add acidity that brightens the flavor and keeps the jelly tasting fresh.
The step that matters
Boiling the syrup until it almost candies. Boiling the juice and sugar concentrates sugar and reduces water, which helps the finished jelly set firmly and keeps it from being runny. Overcooking can make the syrup too stiff to blend smoothly with the isinglass.
“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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