Suppose a bushel of flour be put it into the kneading trough, then take about three quarters of a pint of warm water, and one tea-spoonful of yeast. Stir it in till it is thoroughly mixed with the water; and make a hole in the middle of the flour, large enough to contain two gallons of water. Pour in the yeast and add some of the flour until it is a thick liquid paste; strew some of the dry flour over it, and let it stand an hour. Then take a quart more of warm water, and pour it in: in about an hour it will be seen that the small quantity of yeast has raised the mixture so, that it will break through the dry flour placed over it; and when the warm water has been added, take a stick and stir in more flour until it is as thick as before; then shake again some dry flour over it, and leave it for two hours more, the mass will rise and break through the dry flour again; you may then add three quarts or a gallon of water, and stir in the flour, and make it into a soft paste, taking care to cover it with dry flour again, and in about three or four hours more the dough may be mixed up, and covered up warm; and in four or five hours more it may be made up into loaves, and put in the oven; and in this manner may be produced as light a bread as though a pint of yeast had been used. It does not take above a quarter of an hour more than the usual way of baking, for there is no time lost but that of adding the water at three or four times. The author of this method assures us that he constantly bakes in this way. In the morning, about six or seven o’clock, he puts the flour in the trough, and mixes up the spoonful of yeast with the warm water; in an hour’s time he adds more flour, in two hours, again more, and about noon makes up the dough, and about six in the evening it is put into the oven: he has always good bread. Economical Preparation of Yeast. The following economical method of making yeast is recommended by Dr. Lettsom. Thicken two quarts of water with four ounces of fine flour, boil it for half an hour, then sweeten it with three ounces of brown sugar; when almost cold, pour it with four spoonfuls of baker’s yeast into an earthen jug, deep enough for the fermentation to go on without running over; place it for a day near the fire, then pour off the thin liquor from the top, shake the remainder, and close it up for use, first straining it through a sieve. To preserve it sweet, set it in a cool cellar, or hang it some depth in a well. Keep always some of this to make the next quantity of yeast that is wanted. Mr. I. Kerby recommends the following method of obtaining yeast from potatoes. Potatoe Yeast.