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Roman Punch

A chilled citrus punch with rum or kirschwasser, sugar syrup, and whipped egg whites.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Roman Punch

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

Ingredients

Directions

Make the syrup and citrus base

  1. In a saucepan, combine the water and sugar, and boil until it forms a syrup.

  2. Add the thinly cut rind of 3 lemons and 1 orange, along with the juice of the oranges and lemons, and bring to a boil.

  3. Once cooled, strain the mixture and partially freeze it.

Finish and serve

  1. Stir in the rum or kirschwasser and the stiffly whipped egg whites, then freeze for a few more minutes.

  2. Serve in sorbet cups or glasses while still half-frozen.

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. Lemon + orangetop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Orange + rumtop 12% of all pairs
    Smell alikemoderate
    Cooked together801 recipes

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

  3. Sugar + rumtop 14% of all pairs
    Smell alikelow
    Cooked together2,908 recipes

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

  4. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Lemon + eggtop 19% of all pairs
    Smell alikelow
    Cooked 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

Loaf sugar
Dissolves into the water to form a syrup that sweetens the punch and keeps it from freezing solid.
Egg whites
Whipped stiff and folded in, they add a light, airy foam that softens the frozen texture.
Lemons
Juice and rind supply acidity and aroma that balance the sweet syrup.
Oranges
Juice and rind add sweetness, fragrance and additional acidity to the citrus base.
Rum or kirschwasser
Alcohol lowers the freezing point, keeping the punch softer and less icy when served.

The step that matters

Folding in the stiffly whipped egg whites. If the whites are under-whipped or the mixture is too firm or too warm, they will deflate or not blend in evenly, leaving a dense, uneven texture. Fold gently and freeze only briefly so the foam stays light.

Swap the orange

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

  1. Vanillafits better
  2. Orangethe original
  3. Pineapplefits about as well
  4. Limefits less well

Fit is the average pairing score against sugar, lemon, egg, rum. 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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