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 ↓
Water Ice
Ingredients
Directions
Prepare
Combine water and sugar in a large bowl.
If using oranges, rub the rind on sugar lumps.
If using oranges, add the juice of 9 oranges and the juice of 3 lemons.
If using lemons, add the juice of 12 lemons.
If using pineapples, add 1 quart of grated pineapple, ensuring it is free of stringy parts.
Freeze
Beat the egg whites and mix them in as the mixture freezes.
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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Orange + pineappletop 6% of all pairsSmell alikemoderateCooked together1,664 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
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Lemon + pineappletop 12% of all pairsSmell alikemoderateCooked together1,964 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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
- Egg whites
- Whipped egg whites add airy lightness and a smoother, softer texture to the frozen ice.
- Sugar
- Sugar lowers the freezing point and keeps the ice tender rather than hard and icy.
- Orange juice
- Adds acidity and citrus aroma, balancing the sweetness of the sugar.
- Lemon juice
- Adds sharp acidity and bright flavor that cuts through the sweetness.
The step that matters
Beat the egg whites and mix them in as the mixture freezes. Egg whites must be beaten to a foam and folded in while the mixture is partly frozen. Adding them too early or too late prevents an even, airy texture, and the ice may turn dense or grainy.
Swap the orange
The recipe marks orange as optional. How well each one fits the dish's main ingredients (sugar, egg, lemon, pineapple):
- Vanillafits about as well
- Orangethe original
- Figfits less well
- Limefits less well
Fit is the average pairing score against sugar, egg, lemon, pineapple. 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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