The recipe
Ingredients
Directions
Place 2 ounces of refined niter in a stone bottle.
Nearly fill the bottle with hot water.
Cork the bottle and submerge it in a well or cistern.
After 2 to 3 hours, the mixture will freeze; break the bottle to access the frozen mixture.
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.
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