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Grape Catsup

A preserved grape condiment made with vinegar, sugar, and spices.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Cinnamon and clove match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,189 recipes. Both carry ethyl cinnamate, which smells sweet, balsamic. The science ↓

Grape Catsup

Ingredients

Directions

Prepare the grapes

  1. Squeeze the pulp from the grapes and scald it until the seeds separate easily.

  2. Work the pulp through a colander and discard the seeds.

Cook

  1. Place the pulp and skins in a porcelain kettle with vinegar, sugar, cinnamon, cloves, and allspice.

  2. Boil for 1.5 hours, stirring frequently to prevent burning.

Store

  1. Transfer to a stone jar and cover with a cloth and paper.

  2. Store in a cool place; it will keep indefinitely.

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. Cinnamon + clovetop 1% of all pairs
    Smell alikestrong
    Cooked together14,189 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  2. Clove + allspicetop 1% of all pairs
    Smell alikestrong
    Cooked together7,874 recipes

    Shared aroma: estragole (anise, licorice).

  3. Cinnamon + allspicetop 1% of all pairs
    Smell alikestrong
    Cooked together5,536 recipes

    Shared aroma: estragole (anise, licorice).

  4. Grape + cinnamontop 9% of all pairs
    Smell alikemoderate
    Cooked together3,164 recipes

    Shared aroma: anethole (sweet, anise).

  5. Sugar + cinnamontop 10% of all pairs
    Smell alikelow
    Cooked together30,779 recipes

    Shared aroma: guaiacol (smoky, sweet).

Sugar and cinnamon barely smell alike, yet cooks put them together in 30,779 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

Grapes
Provide the pulp and skins that form the body and flavor of the ketchup.
Vinegar
Adds acidity that gives sharp flavor and helps the ketchup keep well.
Sugar
Adds sweetness and thickens the ketchup as it cooks down.
Cinnamon
Contributes warm, sweet spice aroma and flavor.

The step that matters

Stirring during the boil. Sugar-rich fruit mixtures scorch easily on the bottom of the kettle as water evaporates and sugar concentrates. Frequent stirring spreads heat evenly and prevents burnt flavor.

Swap the grape

How well each one fits the dish's main ingredients (vinegar, sugar, cinnamon, clove, allspice):

  1. Vanillafits better
  2. Orangefits better
  3. Quincefits better
  4. Grapethe original

Fit is the average pairing score against vinegar, sugar, cinnamon, clove, allspice. 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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