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Making yeast bread

Two common ways of making yeast bread are the sponge method and the straight-dough method. In the sponge method, the yeast is first mixed with water and some of the flour. This mixture, called a sponge, is allowed to ferment before the rest of the ingredients are added. In the straight-dough method, all the ingredients are mixed at once.

After the ingredients are mixed together in the proper amounts, several steps remain— kneading the dough, letting it rise, releasing the trapped gas, allowing the bread to rise again, and baking the bread.

For the gluten to develop properly, most breads made at home require about 10 to 20 minutes of kneading. The purpose of kneading is to work the dough into a uniform texture. To knead bread dough, put the dough on a lightly floured board and flatten it with the palm of your hand. Pick up the edge farthest from you and fold it over the edge nearest you. Push the edges together with the heel of your hand. At the same time, push the mass of dough away from you. Then turn the dough a quarter of the way around and repeat the process. This folding, pushing, and turning process is repeated until the dough is smooth and shiny and has lost all of its stickiness.

Next, the dough is allowed to rise until it has doubled in bulk. For this step, the kneaded dough must be placed in a warm, preferably moist place, away from any cold drafts. The temperature should be about 27 to 29 °C (81 to 84°F). An ideal spot is an unlighted oven.

The dough is covered with a sheet of waxed paper or a clean towel. This prevents a dried crust from forming on the outside.

Depending on the recipe and the amount of yeast used, some kneaded doughs take close to 24 hours to double in bulk. Others take as little as 1 hour. To test whether dough has doubled in bulk, press the tips of two fingers lightly and quickly about 1.5 centimeters (1/2 inch) deep into the dough. If the dent remains, the dough has doubled.

After the dough has risen, it is necessary to release the gas trapped within it. For hand-kneaded dough, this is done by plunging a fist into the dough to collapse it and then kneading it for a few minutes. Then the bread is allowed to rise again, so that it will have a light and even texture.

Baking is the final stage in the bread making process. The dough is placed in a preheated oven. Most wheat bread is baked in pans. Some breads, such as French bread, are formed into loaves and placed directly on baking sheets. It is important that the bread be heated evenly from all sides.

The heat of the oven gives the yeast its last chance to work, and most loaves will rise about 5 centimeters (2 inches) while baking. The yeast is not killed until the inside temperature of the loaf exceeds 54°C (130°F). It takes longest for the center of the loaf to reach that temperature, and the yeast in the center has the longest time to work. As a result, most baked breads have the shape of a gently sloping.