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Dessert

Blackberry Jam

A jam made by boiling blackberries with sugar and preserving in brandy-dipped paper.

From an old cookbook · modernised transcription
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Why it works: Sugar and brandy are a kitchen classic. They rank in the top 19% of all ingredient pairs, and cooks put them together in 11,939 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Blackberry Jam

Ingredients

Directions

Prepare the jam

  1. Rub the blackberries through a fine sieve into a preserving pan.

  2. Add the sifted sugar to the blackberries.

  3. Heat the mixture over a brisk charcoal fire until it boils.

  4. Boil briskly for 15 minutes, stirring constantly to prevent burning.

Pot and store

  1. Pour the jam into pots.

  2. Cover with papers dipped in brandy and tie them down.

  3. Store in a dry room.

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 + brandytop 19% of all pairs
    Smell alikelow
    Cooked together11,939 recipes

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

Sugar and brandy barely smell alike, yet cooks put them together in 11,939 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

Blackberries
Provide the fruit pulp, flavour and natural pectin that help the jam set.
Sugar
Sweetens the jam and, at high concentration, helps it set and keeps it preserved.
Brandy
Used on the papers laid over the jam, where its alcohol helps discourage mould.

The step that matters

Boiling briskly while stirring constantly. Sugar-heavy jam can scorch on the bottom of the pan, giving a burnt taste. Constant stirring spreads the heat and keeps the sugar from sticking, while a brisk boil reaches the concentration needed for a good set.

“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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