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Preserve

To Preserve

This recipe preserves fruit by boiling it in a sugar syrup and storing it in jars.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

To Preserve

Ingredients

Directions

Prepare the fruit and syrup

  1. Soak the fruit in spring water for 2 days, changing the water twice daily.

  2. Boil the sugar and water with the orange juice to make a syrup.

  3. Clarify the syrup.

  4. Cool the syrup.

Cook the fruit

  1. Boil the fruit in the syrup for 30 minutes, repeating daily until clear.

Make the apple jelly

  1. Pare and core the green pippins.

  2. Boil them in water until strong in flavor.

  3. Strain through a jelly bag.

  4. Add 1 pound of sugar, the lemon peel, and juice to each pint of the strained water.

  5. Boil to a strong syrup.

Jar and cover

  1. Drain the syrup from the fruit.

  2. Pour the apple jelly over the oranges in a jar.

  3. Cover with brandy paper.

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. Orange + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 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. Sugar + orangetop 20% of all pairs
    Smell alikelow
    Cooked together19,212 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

Double-refined sugar
Preserves the fruit and provides sweetness, building a thick syrup that keeps it firm.
Green pippins
Provides the fruit and pectin-rich liquid that is strained into the apple jelly.
Lemon
Adds acidity and aroma to the apple jelly.

The step that matters

Boil the fruit in the syrup for 30 minutes, repeating daily until clear. Repeated short boils over several days let the syrup slowly replace the water in the fruit. Boiling it all at once would toughen or break the fruit, so the gradual repetition is what keeps it whole and clear.

“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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