Also, your fermentation will start quickly if you re-use the yeast several times before completely clean out your reactor vessel. The first go-around, the yeast acclimates to the alcohol. When the sugar is spent pour off all the liquid but leave behind the yeast and sludge on the bottom. Put fresh fermentable liquid on top for round two. Plus, you don't have to buy more yeast!
Great info there p. Welcome to TPT, btw. Do you use this method yourself? If so, I would be interested in hearing more about it. Specifically, what type of yeast used and where to get it. Do you start it the same way as baker's yeast?