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Tomato Preserves

A sweet tomato preserve made with sugar and lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Tomato and lemon 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 ↓

Tomato Preserves

Ingredients

Directions

Prepare

  1. Peel the tomatoes and place them in a bowl.

  2. Add the sugar and let the mixture stand overnight.

Make the preserves

  1. Pour off the juice and cook it down to a rich syrup.

  2. In a pot, boil the lemon slices in enough water to cover until the peels are tender.

  3. Add the tomatoes to the pot and cook until they are 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. Tomato + lemontop 11% of all pairs
    Smell alikemoderate
    Cooked together4,592 recipes

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

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

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

  3. Tomato + sugartop 33% of all pairs
    Smell alikelow
    Cooked together4,667 recipes

    Shared aroma: beta-damascenone (apple, rose).

Sugar and lemon 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

Tomatoes
Provide the bulk of the fruit and its flavor, and soften into the preserve as they cook.
Sugar
Draws juice out of the tomatoes and, once cooked down, thickens into a syrup and preserves the fruit.
Lemons
Add acidity and bright flavor, and their peels contribute pectin that helps the preserve set.

The step that matters

Cooking the juice down to a syrup. The juice must reduce long enough to become thick and rich. Too little cooking leaves it runny, while overcooking can scorch the sugar and make it bitter.

Swap the tomato

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

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

Fit is the average pairing score against sugar, lemon. 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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