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Dough is typically allowed to rise in the proofer before baking, but can also be used for the first rise, or bulk fermentation. Desired proofer temperatures can range from 20 to 45 °C (70 to 115 °F); cooler temperatures are achieved in a dough retarder, see below.
A fermentation ratio is described as the time the dough takes from leaving the mixer to just before the peak begins to fall — when degassing occurs — relative to the remaining bulk fermentation time afterwards. [26] Folding or knock back may also be omitted: after sufficient bulk fermentation time, the dough may go straight to make-up. [27]
In the Encyclopedia of Food Microbiology, Michael Gaenzle writes: "One of the oldest sourdough breads dates from 3700 BCE and was excavated in Switzerland, but the origin of sourdough fermentation likely relates to the origin of agriculture in the Fertile Crescent and Egypt several thousand years earlier", [3] and "Bread production relied on the use of sourdough as a leavening agent for most ...
The sponge's fermentation time depends on its temperature and that of the surrounding area, the ingredients used, and the percentage amount of yeast. It ferments in a humid environment at 74–78 °F (23–26 °C), where it may rise and expand to 4-5 times its original volume, when it falls it has reached 66-70% of its allotted time.
The fermentation process and preparation of sourdough leads to a variety of benefits, says Van Buiten. First, sourdough bread naturally has higher levels of nutrients than regular bread.
This is about the point in time when some process similarities of yeast pre-ferments to sourdough or levain starters begins to diverge. The typical amounts of time allotted for the yeast pre-ferment period may range from 2–16 hours, depending on the dough's temperature and the added amount of viable yeast, often expressed as a bakers' percentage.
Sourdough is a mixture of flour and water inhabited by a symbiosis of Lactic acid bacteria and yeasts. It is used in baking to leaven and acidify bread. It is used in baking to leaven and acidify bread.
A fermentation starter (called simply starter within the corresponding context, sometimes called a mother [1]) is a preparation to assist the beginning of the fermentation process in preparation of various foods and alcoholic drinks. Food groups where they are used include breads, especially sourdough bread, and cheese.