I think there is a bit confusion about the term emulating USB-ZIP or USB-FDD. 1) For me emulating USB-ZIP means (any device, such as this USB-pendrive) claims to be (real USB-ZIP). Or emulating USB-FDD means (any device, such as this USB-pendrive) claims to be (real USB-FDD). I suspect this real emulating can only be done on hardware / firmware level and is not possible for normal end users. So either you buy a device with this feature or not...
Sourdough is dough which has microorganisms (for example lactobacillus or yeast) from sourdough or sourdough starters, which are active or can be reactivited. With the addition of grain products and water, they are capable of continuous acid generation.
This is in reference to ambient yeast and bacterial microorganisms already present in the flour, water, air, on your hands and anything else that comes into contact with the dough. Bacterial growth, like yeast, is affected by moisture, ph, temperature, food supply, salt, sugar, oxygen supply and light.acteria thrive at a pH around neutrality (6.5- 8.0). Most chemicals will kill bacteria. Since bacteria will not grow in mediums with large amounts of salt, salt plays a contributing factor to the leavening of sourdough bread.