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Dessert

Marmalade of Unripe Grapes

A preserve made from unripe grapes, lemon juice, and cane sugar, cooked until set.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Grape and lemon are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 2,412 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Marmalade of Unripe Grapes

Ingredients

Directions

Prepare the grapes

  1. Put the grapes into a saucepan of boiling water.

  2. Once they swell, remove them and add lemon juice.

  3. Let them stand by the fire until they are quite green.

  4. Transfer to an earthenware basin and cool.

  5. Rub through a sieve and dry the puree over the fire.

Make the marmalade

  1. Stir in the sugar and return to the fire.

  2. Cook until it sets, then pot and cover.

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. Grape + lemontop 14% of all pairs
    Smell alikemoderate
    Cooked together2,412 recipes

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

  2. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  3. Grape + sugartop 23% of all pairs
    Smell alikelow
    Cooked together7,490 recipes

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

Lemon and sugar 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

Unripe grapes
Provide the tart fruit base and pectin-rich puree that gives the marmalade its body.
Cane sugar
Sweetens the marmalade and helps it thicken and set as it cooks down.
Lemon juice
Adds acidity that brightens the flavour and supports setting.

The step that matters

Cook until it sets. Sugar and fruit pectin only gel once enough water has evaporated and the mixture reaches the right concentration; undercooking leaves it runny, while overcooking can make it stiff and sticky.

Swap the grape

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

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

Fit is the average pairing score against lemon, sugar. 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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