Or,
12 teaspoonfuls carb. soda.
24 teaspoonfuls cream tartar.
Put as above, and use in like proportion.
Bread Sponge ( Potato. ) ✠
6 potatoes, boiled and mashed fine while hot.
6 tablespoonfuls baker’s yeast.
2 tablespoonfuls white sugar.
2 tablespoonfuls lard.
1 even teaspoonful soda.
1 quart warm—not hot—water.
3 cups flour.
Mash the potatoes, and work in the lard and sugar. Stir to a cream, mixing in gradually a quart of the water in which the potatoes were boiled, which should have been poured out to cool down to blood warmth. Beat in the flour, already wet up with a little potato-water to prevent lumping, then the yeast, lastly the soda. Cover lightly if the weather is warm, more closely in winter, and set to rise over night in a warm place.