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Dessert

Walnut Jam

A sweet preserve made from walnuts, ginger, water, and brown sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Walnut and ginger work together. They rank in the top 10% of all ingredient pairs, and cooks put them together in 737 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Walnut Jam

Ingredients

Directions

Prepare the walnuts

  1. Prick the walnuts all over and boil them in water until soft.

  2. Strain the water off and place a clove in each walnut.

  3. Strew the bruised ginger over the walnuts.

Make the syrup and cook

  1. In a pot, combine ½ cup of water and 2½ pounds of coarse brown sugar, stirring over heat until melted.

  2. Add the walnuts to the syrup and boil for 20 minutes, stirring to prevent burning.

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. Walnut + gingertop 10% of all pairs
    Smell alikemoderate
    Cooked together737 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  2. Ginger + sugartop 17% of all pairs
    Smell alikelow
    Cooked together14,054 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

  3. Walnut + sugartop 26% of all pairs
    Smell alikemoderate
    Cooked together7,147 recipes

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

Ginger and sugar barely smell alike, yet cooks put them together in 14,054 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

Walnuts
Form the bulk of the jam and give it a soft, chewy texture.
Coarse brown sugar
Sweetens the dish and thickens the syrup as it cooks down.
Ginger
Adds warm, aromatic flavor that balances the sweetness.

The step that matters

Stirring while the walnuts boil in the syrup. Sugar syrup scorches quickly on the bottom of a pot as it thickens. Frequent stirring spreads the heat evenly, which prevents burnt flavor and keeps the syrup from turning bitter or dark.

Swap the walnut

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

  1. Sesamefits better
  2. Cashew nutfits better
  3. Milletfits better
  4. Walnutthe original

Fit is the average pairing score against ginger, 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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