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Preserve

Preserved Tomatoes

A method for preserving tomatoes by boiling and jar sealing.

From an old cookbook · modernised transcription
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Why it works: Tomato and sugar are a kitchen classic. They rank in the top 33% of all ingredient pairs, and cooks put them together in 4,667 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Preserved Tomatoes

Ingredients

Directions

Prepare

  1. Skin the tomatoes by pouring boiling water over them.

Cook

  1. Boil the tomatoes very hard for 20 minutes.

Jar and seal

  1. Fill pint jars to overflowing.

  2. Screw the jars down tight.

  3. As the jars cool, screw them down again to ensure they are tight.

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

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

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Tomatoes
Make up the body of the preserve and supply the acidity and liquid.
White sugar
Adds sweetness that balances the tomatoes' acidity.

The step that matters

Screwing the jars down again as they cool. As hot jars cool, the air inside contracts and creates a partial vacuum that pulls the lids down. Tightening them again during cooling helps ensure a firm seal, which keeps air and microbes out of the preserved tomatoes.

“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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