Dissolve 1 cake compressed yeast in 1 pt lukewarm unsalted water in which potatoes were boiled. Mix well, add 1/2 cup sugar, stir thoroughly, pour into a 2-qt glass jar, cover loosely, and then let stand in a warm place over night. Next morning it will be a foaming mass. Put the rubber on the can, screw the cover down tight and set away in a cool place. When ready to make bread, pour into the can of yeast foam prepared as above, 1 pt lukewarm water in which potatoes were cooked, mix well, and then stir in 1/4 cup sugar. Let the can stand open in a warm place about 5 hours, or until the contents are very light and foamy. Then stir it down and use 1 pt of the mixture for raising four loaves of bread. Put the rubber and cover on the jar again and keep in a cool place. Some of this yeast may be used once or twice a week, or every night, by adding fresh potato water and sugar as described above.- [Mrs. C. E. A., N. H.