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Clarify Sugar

A method to clarify sugar by boiling fruit and sugar, then straining the jelly and using the remainder as jam.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 2 ingredients
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Why it works: Currant and sugar are a kitchen classic. They rank in the top 26% of all ingredient pairs, and cooks put them together in 12,256 recipes. The science ↓

Clarify Sugar

Ingredients

Directions

Cook the fruit

  1. Add fruit to a preserving pan and heat over medium flame.

  2. Add sugar and boil for 30 minutes.

  3. Test a drop to see if it jellies.

Separate the jelly

  1. If it jellies, strain off the jelly.

  2. Use the remainder as jam.

  3. Ensure enough juice remains for the jelly.

Clarify the sugar

  1. Clarify the sugar until all water evaporates.

  2. Add equal weight of fruit and boil for 20 minutes.

  3. Test for jelly consistency.

  4. Boil longer if necessary.

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. Currant + sugartop 26% of all pairs
    Smell alikelow
    Cooked together12,256 recipes

Currant and sugar barely smell alike, yet cooks put them together in 12,256 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

Currants
Supply juice, natural pectin and acid that help the mixture set into jelly.
Sugar
Sweetens the fruit and, as it boils down, helps the mixture thicken and set.

The step that matters

Testing for jelly. Pectin, acid and sugar must reach the right concentration to set. A drop test shows when it is ready. Stopping too early leaves runny jam, while boiling too long makes it stiff.

“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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