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Dessert

Green Tomato Jam

A jam made from sliced green tomatoes, sugar, lemons, and ginger.

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 ↓

Green Tomato Jam

Ingredients

Directions

  1. Combine the sliced green tomatoes, granulated sugar, sliced lemons, and ginger root in a large pot.

  2. Boil the mixture until it becomes thick and transparent.

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

Green tomatoes
Provide the bulk of the jam and pectin-free body that thickens as the fruit breaks down.
Granulated sugar
Sweetens the jam and helps it thicken and set as it cooks down.
Lemons
Add acidity that brightens the flavor and supports gel formation.

The step that matters

Boiling until thick and transparent. Sugar and fruit must cook long enough to concentrate and reach a gel point; stopping early leaves a runny jam, while overcooking can scorch the sugar and make it stiff.

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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