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 ↓
Roman Punch, Iced
Ingredients
Directions
Make the syrup
Combine the powdered sugar, lemon juice, and orange juice in a bowl.
Add the thin lemon rind and thin orange rind.
Let the mixture infuse for 1 hour.
Strain the syrup through muslin.
Make the punch
Gradually add the beaten egg whites.
Freeze the punch, stirring vigorously with a spatula.
Mix the rum, green tea, brandy, and champagne in a separate container.
Add ice to the mixture.
Stir until dissolved.
If the punch is too thick, thin it with more champagne.
Serve
Serve in high glasses between the roast and game courses.
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.
-
Lemon + orangetop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Rum + champagnetop 2% of all pairsSmell alikestrongCooked together137 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
-
Rum + brandytop 5% of all pairsSmell alikemoderateCooked together1,058 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Brandy + champagnetop 5% of all pairsSmell alikemoderateCooked together169 recipes
Shared aroma: ethyl cinnamate (sweet, balsamic).
-
Rum + green teatop 12% of all pairsSmell alikemoderateCooked together60 recipes
Shared aroma: sotolon (curry, maple).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Powdered sugar
- Sweetens the punch and dissolves into the juice to form the syrup base.
- Lemon juice
- Adds acidity that balances the sweetness and brightens the flavour.
- Egg whites
- Whipped to a firm froth, they add a light, airy texture to the punch.
- Rum
- Contributes the main spirit flavour and aroma to the punch.
- Champagne
- Adds sparkle and liquid volume, and thins the punch when it is too thick.
The step that matters
Gradually add the beaten egg whites. Adding the whites slowly lets them fold into the syrup without deflating the firm froth, keeping the punch light and evenly textured rather than lumpy or watery.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, orange, egg, rum, green tea, brandy, champagne):
- Vanillafits better
- Pineapplefits better
- Peachfits about as well
- Lemonthe original
Fit is the average pairing score against sugar, orange, egg, rum, green tea, brandy, champagne. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Orange Syrup47 recipes
Lemon Whey33 recipes
Lemon Wine31 recipes
Orange Water Ice28 recipes