Why it works: Sugar and rum are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 2,908 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Roman Punch Ice
Ingredients
Directions
Make the ice
Make 1 quart of sweet lemonade and freeze it.
Prepare the meringue
Whip the egg whites until frothy, then mix in sugar to taste.
Combine and finish
When the lemonade ice is beginning to settle, fold the whipped egg whites into it.
When the mixture is almost hard enough, add 1 glass of Jamaica rum and mix well.
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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Sugar + rumtop 14% of all pairsSmell alikelowCooked together2,908 recipes
Shared aroma: beta-damascenone (apple, rose).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + rumtop 27% of all pairsSmell alikemoderateCooked together1,589 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg whites
- Whipped into foam, they add a light, airy texture to the frozen lemonade.
- Sugar
- Sweetens the egg whites and helps stabilise their whipped foam.
- Jamaica rum
- Adds flavour and keeps the ice from freezing rock-hard, since alcohol lowers the freezing point.
The step that matters
Adding the rum near the end of freezing. Alcohol lowers the freezing point, so adding rum too early can stop the mixture from freezing properly. Adding it when the mixture is almost firm lets it blend in while keeping a softer, scoopable texture.
“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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