At noon the day before baking, take half a cup of corn meal and pour over it enough sweet milk boiling hot to make it the thickness of batter-CAKES. In the winter place it where it will keep warm. The next morning before breakfast pour into a pitcher a pint of boiling water; add one teaspoonful of soda and one of salt. When cool enough so that it will not scald the flour, add enough to make a stiff batter; then add the cup of meal set the day before. This will be full of little bubbles. Then place the pitcher in a kettle of warm water, cover the top with a folded towel and put it where it will keep warm, and you will be surprised to find how soon the yeast will be at the top of the pitcher. Then pour the yeast into a Bread-pan; add a pint and a half of warm water, or half water and half milk, and flour enough to knead into loaves. Knead but little harder than for BISCUIT and bake as soon as it rises to the top of the tin. This recipe makes five large loaves. Do not allow it to get too light before baking, for it will make the Bread dry and crumbling. A cup of this milk yeast is excellent to raise buckwheat CAKES.
The Whitehouse Cookbook, by Mrs. F.L. Gillette (Year 1887)