I managed to bottle 30 bottles of Australian Ale just the other day from my home brew and also kept the dregs from the bottom of the fermenter. I decided to use some of that today to raise my dough, often referred to as a Beer Barm. I quickly worked out a dough formula and was going to make a 1KG dough but then decided that a single 750g loaf would be the go. i shook the bottle up that contained the Barm and weighed off an equal amount of flour and barm combined the two and set aside, i marked the container so that we could see its progress and its time frame.