Why it works: Lemon and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Ice
Ingredients
Directions
Make the syrup
Grate the rinds of the lemons into a bowl and squeeze in the juice.
Make a boiling syrup with the sugar and half the water.
Pour the hot syrup over the lemon zest and juice.
Make the base
Let the mixture cool.
Add the remaining water.
Strain the mixture into a freezer.
Freeze and finish
Freeze as usual.
Add the whipped egg whites and beat to combine.
Freeze again.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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
- Lemons
- Supply the acidity and fragrant aroma from the zest and juice.
- Sugar
- Adds sweetness and softens the frozen texture by lowering the freezing point.
- Egg whites
- Whipped air folded in gives the ice a lighter, smoother, less icy texture.
The step that matters
Beating in the whipped egg whites. The whites hold air that makes the ice light. Beating them in gently and quickly keeps that air from collapsing, so the texture stays smooth rather than dense.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Datesfits less well
Fit is the average pairing score against sugar, 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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