Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Your lab coordinator has decided to grow and maintain a sourdough starter. A sourdough starter is a live, on-going culture of yeast that is grown in flour, water, and a bit of sugar. It is used as an ingredient in some types of bread. Initially when the ingredients were mixed together the mixture appeared dead. After a while, it began to bubble and foam and then it tripled in volume. Eventually it stopped bubbling. Every week it is maintained by "feeding” it fresh flour every week. Over time, it will start to develop a 'sour' taste when it is used to make bread.
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A sourdough starter is "fed" flour and water every week to keep it alive.Each week, some of the starter can be removed and used for baking bread.It is added to bread dough to add flavour. The older the starter, the stronger the flavour.
What causes the 'sour' taste?
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