Close the bag and mix by hand. Allow to rise, then knead through the bag once more and allow to rise again. Open the bag. Then cook the bread in the microwave, for approximately 2 minutes, turning once during baking. Bread may also be baked in a conventional oven, in the bag, if the bag is an oven-bag.
Yeasts use sugar and flour as a substrate to produce alcohol and carbon dioxide in fermentation.
In the process of cooking, alcohol is driven off, and the carbon dioxide is held within the wheat particles.