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Roman Punch

A chilled lemon rum punch with brandy, sugar, water, and optional champagne.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Roman Punch

Why it works: Rum and champagne match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 137 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. The science ↓

Roman Punch

Ingredients

Directions

Combine

  1. In a large bowl, combine the lemon juice and grated lemon rinds with the sugar.

  2. Add the rum, brandy, and water, and stir until the sugar is dissolved.

  3. Mix in the champagne if using.

Freeze

  1. Freeze the mixture until slushy.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Rum + champagnetop 2% of all pairs
    Smell alikestrong
    Cooked together137 recipes

    Shared aroma: ethyl isobutyrate (fruity, ethereal).

  2. Rum + brandytop 5% of all pairs
    Smell alikemoderate
    Cooked together1,058 recipes

    Shared aroma: beta-damascenone (apple, rose).

  3. Brandy + champagnetop 5% of all pairs
    Smell alikemoderate
    Cooked together169 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  4. Lemon + champagnetop 13% of all pairs
    Smell alikelow
    Cooked together404 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  5. Rum + sugartop 14% of all pairs
    Smell alikelow
    Cooked together2,908 recipes

    Shared aroma: beta-damascenone (apple, rose).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Lemon juice
Adds sharp acidity that balances the sugar and brightens the punch.
Loaf sugar
Adds sweetness and lowers the freezing point, keeping the mixture slushy rather than solid.
Rum
Adds aroma and alcohol, which lowers the freezing point and keeps the texture soft.
Brandy
Adds depth and aroma, and its alcohol also helps keep the mixture slushy.
Lemon rinds
Add fragrant lemon oils that contribute aroma to the punch.

The step that matters

Freeze until slushy. Sugar and alcohol lower the freezing point, so the mixture forms ice crystals slowly and stays spoonable. Freezing it solid or checking too late changes the texture, so it should be watched and stirred to a slush.

Swap the lemon

How well each one fits the dish's main ingredients (rum, brandy, sugar, champagne):

  1. Pineapplefits better
  2. Vanillafits better
  3. Strawberryfits better
  4. Lemonthe original

Fit is the average pairing score against rum, brandy, sugar, 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.

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