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Cranberry Frappe

A frozen cranberry beverage made from boiled cranberries, sugar syrup, lemon juice, and ice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Cranberry Frappe

Ingredients

Directions

Make the cranberry base

  1. Boil cranberries in ½ cup water until tender, then strain through a fine sieve.

  2. In a separate pot, boil 1 cup sugar in ½ cup water until it becomes a thick syrup.

  3. Combine the syrup with the strained cranberries.

Finish and freeze

  1. Once cold, add the strained juice of 2 lemons.

  2. Freeze the mixture until it reaches a mushy consistency.

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.

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. Sugar + syruptop 6% of all pairs
    Smell alikestrong
    Cooked together5,842 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

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

  3. Syrup + lemontop 20% of all pairs
    Smell alikelow
    Cooked together2,235 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

Cranberries
Provide the main fruit flavour, tartness, and colour, and their pectin helps the purée body.
Sugar
Sweetens the frappe and, dissolved into syrup, lowers the freezing point so it stays soft.
Lemon juice
Adds acidity that brightens the cranberry flavour and balances the sugar.

The step that matters

Freeze until mushy, not solid. Sugar and acid lower the freezing point, so the mixture stays slushy at ordinary freezer temperatures. Freezing it fully solid makes it hard and icy rather than the soft, spoonable texture a frappe needs, so it should be checked and stirred or scraped while freezing.

Swap the lemon

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

  1. Vanillafits better
  2. Raisinfits better
  3. Pearfits about as well
  4. Lemonthe original

Fit is the average pairing score against sugar, syrup. 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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