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The sponge and dough method is a two-step bread making process: in the first step a sponge is made and allowed to ferment for a period of time, and in the second step the sponge is added to the final dough's ingredients, [1] creating the total formula. [2] In this usage, synonyms for sponge are yeast starter or yeast pre-ferment.
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.
Sourdough or sourdough bread is a bread made by allowing the dough to ferment using naturally occurring lactobacillaceae and yeast before baking. The fermentation process produces lactic acid , which gives the bread a sour taste and improves its keeping-qualities.
Straight dough is a single-mix process of making bread. The dough is made from all fresh ingredients, and they are all placed together and combined in one kneading or mixing session. After mixing, a bulk fermentation [1] rest of about 1 hour or longer occurs before division. [2] It is also called the direct dough method. [3] [4]
[19] [20] [21] When cooling a levain or sourdough pre-ferment, if the dough temperature drops below 10 °C (50 °F) it affects the culture and leads to the loss of a particular aroma in the baked bread. [11] To allow room for the pre-ferment to rise, the ingredients are mixed in a container at least four or five times their volume.
The method uses a long rise instead of kneading to align the dough's gluten molecules with each other so as to produce a strong, elastic network, resulting in long, sticky strands. The automatic alignment is possible because of the wetness of the dough, which makes the molecules more mobile. [ 7 ]
Grapes being trodden to extract the juice and made into wine in storage jars. Tomb of Nakht, 18th dynasty, Thebes, Ancient Egypt. Sourdough starter. In food processing, fermentation is the conversion of carbohydrates to alcohol or organic acids using microorganisms—yeasts or bacteria—without an oxidizing agent being used in the reaction.
Sourdough is a type of bread produced by a long fermentation of dough using naturally occurring yeasts and lactobacilli. It usually has a mildly sour taste because of the lactic acid produced during anaerobic fermentation by the lactobacilli. Longer fermented sourdoughs can also contain acetic acid, the main non-water component of vinegar.