Buttermilk Dry Yeast

Put one quart of buttermilk in a double boiler, and when it is scalding hot add one and one half quarts of corn meal and one teaspoonful of salt, and stir well. Let this mush cool, and then add one yeast cake that has been dissolved in one half cup of lukewarm water. Set the mixture in a warm place, and when it rises stir it down and let it rise again. Repeat this process three times, and then add more corn meal and enough whole wheat flour to bind it so that it can be made into cakes. Use a rounding tablespoonful to each cake if they are to be used in winter, less if for summer use. Let them dry as quickly as possible, but do not put them in the oven or in the sun. A rack hung high over the stove is a good place to dry them. They should have a sour, but not disagreeable, smell. These will keep all summer on a dry pantry shelf.

Potato and Hop Dry Yeast

Boil together four small potatoes and one half cup, packed, of dry hops, using three pints of water. When the potatoes are done, take them out and put through a sieve or ricer. Add two cups of whole wheat flour and mix well. Strain the boiling hop water over this mixture and beat till it is a smooth batter. Add one tablespoonful of salt and the same of ginger and one half cup of sugar. When lukewarm, add one yeast cake that has been dissolved in one cup of lukewarm water. Let this stand one or two days, the time depending upon the temperature of the room, stirring it down occasionally. When it smells good and sour, add corn meal till it is thick enough to handle. Make into cakes, using a rounded tablespoonful if they are to be used in winter and less for summer use. Dry quickly, but do not put in the oven or in the sun. It will take a few days before they are dry enough to put away. These will keep in a box on a dry pantry shelf winter or summer.

One cake is equal to a cake of compressed yeast.

Continental Dry Yeast

When putting the bread in pans save out a pint of the dough. Roll this half an inch thick, put it on plates, and leave it on the pantry shelf, turning it occasionally. It will become quite sour as it dries. After a few days the drying may be hastened, but do not overheat it or the yeast plant will be killed. When dry, break it into convenient pieces and put in a box or jar. To use, break into small pieces, enough to half fill a cup and soak till soft in lukewarm water. Use like any yeast. I have had satisfactory results using this yeast for raising a sponge.

Liquid Yeast

This will keep one or two weeks in summer and five or six in winter if not allowed to freeze. Scalding or freezing kills the yeast plant.

Add one cup of dry hops to two quarts of boiling water and boil gently for fifteen minutes. In the meantime peel and grate five large potatoes into enough water to cover them; this is to prevent them from turning dark. Add one cup of sugar, one tablespoonful of salt, and the same of ginger. Put this mixture into a saucepan and pour over it the water in which the hops have boiled. Cook, stirring all the time till it thickens, turn into a perfectly clean crock or jar, and when lukewarm add two cups of good yeast or two yeast cakes that have been dissolved in two cups of lukewarm water. Keep the jar where it is moderately warm and stir the yeast down as often as it rises. When fermentation stops, it will be quite thin. It should then be covered closely and put in a cool place. It is good as long as it smells sour but does not taste so. When yeast loses its smell it has no more rising power; in other words, the yeast plant is dead.

One half cup of this yeast is equal to one cake of compressed yeast.

The potatoes may be boiled and mashed through a sieve, but practical bread-makers say that the grated potatoes make the best yeast.

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