Oat Flour Sponge
Take one and one half cups of hot mashed potato, two cups of sifted oat flour, mix well, and scald with two cups of the boiling water in which the potatoes were cooked. Add one tablespoonful of molasses and one of salt. When cool, add one yeast cake that has been dissolved in one cup of lukewarm water.
Oatmeal Sponge
Pour two cups of boiling water over two cups of rolled oats and let it stand covered for two hours. Add two cups of whole wheat flour and one cup of water hot enough to make the mixture lukewarm. Stir well and add one tablespoonful of salt and the same of molasses. Add one yeast cake dissolved in one cup of lukewarm water and set to rise.
Four Varieties of Bread from one Potato Sponge
When the potato sponge is light and foamy, put one third of it aside. To the other two thirds add enough whole wheat flour to make a soft dough, but one that can be handled. Knead till it is smooth and velvety. Set it to rise. When it has doubled its bulk knead a little and divide it in two. Make a loaf of one part, and when it has half doubled its bulk bake in a moderate oven for an hour.
Roll the remaining dough into a strip half an inch thick. Spread with brown or white sugar, using a half cupful. Sprinkle one teaspoonful of cinnamon over the sugar and lay on a few raisins. Roll up carefully and put into a bread pan to rise till it has half doubled its bulk. Bake in a moderate oven. If the sheet of dough is kept as wide as the bread pan is long, this will fit in and when it is cut the spiral of sugar and cinnamon will show to perfection.
To the remaining sponge add rye flour till it is stiff enough to handle, rather a stiff dough. Set it to rise, and when doubled its bulk make all but one and one half cups of the dough into a small loaf and let it rise till it has half doubled its bulk. Bake an hour in a moderate oven.
To make coffee cake from the remaining dough, first cream together one tablespoonful of shortening with two tablespoonfuls of sugar. Cut this into the dough with a knife and beat till it is smooth. Add one well-beaten egg and beat to a smooth batter. Spread in a cake pan and let it stand twenty minutes. Pour over it a mixture of two tablespoonfuls of sugar, one teaspoonful of cinnamon, and two tablespoonfuls of cream. Sprinkle a little flour or cake crumbs over it and bake in a hotter oven than for bread.