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Preserve

Preserved Green Tomatoes

Green tomatoes boiled with sugar, lemon juice and ginger until thick, making a sweet preserve.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Lemon and ginger match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 5,154 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Preserved Green Tomatoes

Ingredients

Directions

Prepare the tomatoes

  1. Wash and weigh the tomatoes.

  2. Cover with water and boil until broken.

  3. Drain the water.

Make the preserve

  1. For every pound of tomatoes, add ¾ pound of sugar and a little water; boil until very thick.

  2. Squeeze lemon juice into the mixture.

  3. Boil the lemon peel until soft, then slice and add it to the mixture.

  4. Add preserved ginger root or fresh ginger tied in muslin.

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. Lemon + gingertop 5% of all pairs
    Smell alikestrong
    Cooked together5,154 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  2. Tomato + gingertop 10% of all pairs
    Smell alikemoderate
    Cooked together1,887 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Tomato + lemontop 11% of all pairs
    Smell alikemoderate
    Cooked together4,592 recipes

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

  4. Sugar + gingertop 17% of all pairs
    Smell alikelow
    Cooked together14,054 recipes

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

  5. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

Sugar and ginger 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

Tomatoes
Provide the bulk of the preserve and its fruity body once softened by boiling.
Sugar
Sweetens the preserve and thickens it as the mixture boils down.
Lemon juice
Adds acidity that brightens the flavour and balances the sweetness.

The step that matters

Boil until very thick. Sugar and fruit must be cooked down far enough to reach a high sugar concentration, which thickens the preserve and helps it keep. Stopping early leaves it runny and more prone to spoiling.

Swap the tomato

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

  1. Arrowrootfits better
  2. Sweet potatofits better
  3. Broccolifits better
  4. Tomatothe original

Fit is the average pairing score against sugar, lemon, ginger. 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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