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Drink

Rennet Whey

Liquid whey obtained by curdling fresh milk with rennet.

From an old cookbook · modernised transcription
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Rennet Whey

Ingredients

Directions

Prepare

  1. Steep the rennet in the water until cool.

  2. Warm the milk to the same temperature as fresh from the cow.

Make the curd

  1. Add the rennet to the warm milk.

  2. Let it stand by the fire until it thickens.

Separate

  1. Place the mixture in a vessel over boiling water to separate the curds from the milk.

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

New milk
Supplies the proteins that rennet sets into a solid curd.
Rennet
An enzyme that clots milk proteins so they separate into curds and whey.

The step that matters

Add the rennet to the warm milk. Rennet works best at about body temperature. Milk that is too hot can weaken its action and denature the enzyme, while milk that is too cool sets slowly or poorly.

“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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