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.
Sourdough starter begins with a combination of flour and liquid. The proportion and type of flour and liquid can vary dramatically, from a stiff starter made entirely with rye flour and water, to a liquid batter of milk and cornmeal, and everything in between.he result: sourdough starter. These tiny living creatures (lactobacilli and yeast, collectively called the sourdough's microflora) generate byproducts that cause bread to rise and give it complex, rich flavor.