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 Preserves
Ingredients
Directions
Prepare and cook
Pierce each tomato with a fork.
In a large pot, combine tomatoes, sugar, lemon juice, and ginger-mace mixture.
Heat slowly and boil until the fruit is clear.
Remove the tomatoes with a perforated skimmer and spread them on dishes to cool.
Boil the syrup until thick.
Jar and store
Place the tomatoes in jars and pour the hot syrup over them.
Store in a cool, dry place.
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.
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Lemon + gingertop 5% of all pairsSmell alikestrongCooked together5,154 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Tomato + gingertop 10% of all pairsSmell alikemoderateCooked together1,887 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + lemontop 11% of all pairsSmell alikemoderateCooked together4,592 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Ginger + macetop 11% of all pairsSmell alikelowCooked together2,152 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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Sugar + gingertop 17% of all pairsSmell alikelowCooked together14,054 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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 preserve and hold their shape while cooking in syrup.
- Sugar
- Sweetens the fruit and, as it thickens into syrup, helps preserve it.
- Lemon juice
- Adds acidity that brightens the sweetness and supports the preserve's keeping quality.
- Ginger and mace mixture
- Adds warm, spicy aroma that flavours the syrup and fruit.
The step that matters
Boil the syrup until thick. Sugar syrup must reach a high enough concentration to thicken and preserve the fruit. Stopping early leaves a thin syrup that spoils more easily, while overcooking can make it stiff or sugary.
Swap the mace
How well each one fits the dish's main ingredients (tomato, sugar, lemon, ginger):
- Cardamomfits better
- Corianderfits better
- Cinnamonfits better
- Macethe original
Fit is the average pairing score against tomato, 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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