Name: Bitter Yeast, to Correct
Ingredients: 1 piece of black bread; 1 red-hot cinder; a little bran; cold water

Bitter Yeast, to Correct

Ingredients

1 piece of black bread
1 red-hot cinder
a little bran
cold water

Directions

Bake a piece of bread until it is quite black.
While the bread is hot, drop it into the yeast or add a red-hot cinder.
If the yeast is very bitter, place a little bran in a sieve and strain the yeast through it.
Pour cold water over the yeast and let it sink.
Pour off the water.

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.