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To Purify Lemon Juice

A method to purify lemon juice using charcoal.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 2 ingredients
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To Purify Lemon Juice

Ingredients

Directions

Purify

  1. Add the charcoal to the lemon juice.

  2. Let it sit for twelve hours.

  3. Filter the mixture through filtering paper.

Bottle and store

  1. Transfer the filtered juice into small bottles and cork them tightly.

  2. Store the bottles in a cool place.

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

What each ingredient does

Lemon juice
Provides the acidity and the bulk of the finished liquid.
Charcoal
Adsorbs colour and impurities from the juice as it sits, then is removed by filtering.

The step that matters

Filter the mixture through filtering paper. Fine charcoal particles must be fully removed or they stay suspended in the juice and cloud it. Filtering slowly and completely gives a clear result.

“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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