Sour Milk Whey
Ingredients
Directions
Boil the sweet milk.
Add the sour milk to the boiling sweet milk.
Strain the mixture.
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
- Sweet milk
- Forms the bulk of the liquid that the sour milk curdles when heated together.
- Sour milk
- Its acidity causes the milk proteins to curdle, separating solids from the whey.
The step that matters
Adding the sour milk to the boiling sweet milk. Acid in the sour milk must meet hot milk to curdle the proteins. Adding it to boiling milk helps the curds form firmly, so the whey separates clearly when strained.
“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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