Why it works: Lemon and tomato are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 4,592 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Preserved Green Tomatoes
Ingredients
Directions
Prepare
Grate the rind of the lemon and set aside.
Pare off the thick part of the lemon and discard.
Slice the lemon thinly and remove all seeds.
Scald and peel the green tomatoes.
Make the syrup
In a pot, combine enough water with the sugar to dissolve it.
Bring the mixture to a boil, skimming off any scum.
Cook
Add the tomatoes and cook slowly for two hours.
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.
-
Lemon + tomatotop 11% of all pairsSmell alikemoderateCooked together4,592 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Sugar + tomatotop 33% of all pairsSmell alikelowCooked together4,667 recipes
Shared aroma: beta-damascenone (apple, rose).
Lemon and sugar barely smell alike, yet cooks put them together in 53,532 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, becoming tender and absorbing the sugar syrup as they cook.
- Light brown sugar
- Dissolves into the water to form a syrup that sweetens and preserves the tomatoes.
- Lemon
- Adds acidity and aroma from the sliced fruit and grated rind.
The step that matters
Cook slowly for two hours. Gentle heat lets the tomatoes soften and absorb the syrup evenly. A hard boil can break the tomato pieces apart and scorch the sugar, leaving a ragged, darkened preserve.
Swap the tomato
How well each one fits the dish's main ingredients (lemon, sugar):
- Arrowrootfits better
- Sweet potatofits better
- Kalefits better
- Tomatothe original
Fit is the average pairing score against lemon, 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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