Why it works: Lemon and orange 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 ↓
Water Ice
Ingredients
Directions
Prepare
Mix water, sugar, lemon juice, orange juice, beaten egg whites, and lemon essence together.
Pour the mixture into a freezer and freeze for 30 minutes.
Chill and set
Layer crushed ice and coarse sea salt in a container.
Let the mixture stand for 2 hours before serving.
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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Lemon + orangetop 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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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Sugar + orangetop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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 ice and softens its texture by lowering the freezing point.
- Lemon juice
- Adds acidity that brightens the flavour and balances the sugar.
- Egg whites
- Add foam and body, giving the ice a lighter, more tender texture.
- Crushed ice
- Provides the cold needed to freeze the mixture.
- Coarse sea salt
- Lowers the temperature of the ice, helping the mixture chill and freeze.
The step that matters
Layering the crushed ice and salt. Salt mixed with ice lowers its melting point, so the surrounding ice gets much colder than ice alone. This extra cold is what freezes the mixture. Too little salt or ice leaves the mixture slushy or unfrozen.
Swap the orange
How well each one fits the dish's main ingredients (sugar, lemon, egg):
- Orangethe original
- Vanillafits about as well
- Limefits less well
- Raisinfits less well
Fit is the average pairing score against sugar, lemon, egg. 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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