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
Make the syrup
Make a syrup by boiling 1 pint of water with 1 pound of loaf sugar and the thin rind of 4 oranges and 2 lemons.
Skim the syrup carefully and add the juice of 8 oranges; boil for 20 minutes.
Set the jelly
Skim again and add the juice of 1 lemon and either 1 pint of calf's-foot jelly or gelatine; stir well.
Peel 2 sweet oranges, removing all skin, and cut them into slices, removing the seeds.
Fill a mold with the orange mixture, arranging the slices symmetrically.
To unmold, dip the mold in warm water.
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
- Sugar
- Sweetens the jelly and helps it hold a clear, firm set when cooled.
- Calf's-foot jelly or gelatine
- Provides the gelling agent that sets the juice into a firm, sliceable jelly.
- Orange juice
- Supplies the main flavour and liquid that becomes the body of the jelly.
- Lemon juice
- Adds acidity that brightens the orange flavour and supports a clean set.
The step that matters
Skim the syrup carefully. Skimming removes foam and impurities that would cloud the jelly and spoil its clarity. Adding the gelatine before the syrup is well skimmed can leave the finished jelly cloudy.
“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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