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Sauce

Grape Catsup

A grape-based sauce made by cooking grape pulp with sugar, vinegar, and spices.

From an old cookbook · modernised transcription
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Why it works: Clove and cinnamon 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. Remove the skins from the grapes and cook the pulp until you can separate it from the seeds.

Cook the ketchup

  1. In a pot, combine the sugar, vinegar, grape pulp, and spices.

  2. Boil for 15 to 20 minutes.

  3. Just before removing from heat, add the grape skins.

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. Clove + cinnamontop 1% of all pairs
    Smell alikestrong
    Cooked together14,189 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

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

    Shared aroma: anethole (sweet, anise).

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

    Shared aroma: guaiacol (smoky, sweet).

  4. Grape + clovetop 10% of all pairs
    Smell alikemoderate
    Cooked together1,675 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

  5. Grape + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together1,589 recipes

    Shared aroma: isoamyl acetate (banana, fruity).

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 give the ketchup its body and fruity flavour.
Sugar
Adds sweetness and, as it thickens during boiling, helps give the ketchup its body.
Vinegar
Adds acidity that balances the sweetness and gives the ketchup its tang.

The step that matters

Adding the grape skins just before removing from heat. Skins hold most of the grape's colour and flavour compounds. Cooking them too long can dull the colour and make the flavour bitter, so timing matters.

Swap the grape

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

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

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