On the left is the compost from 2011 that was in the bin to the right. I'm now moving the stuff from 2012 into this one and then the bin from this year will move into that spot. On the far right I'll fill with leaves. I mix these with kitchen scrapes and yard waste through the year in the bin on a weekly basis. As you can see it reduces down a lot over time. This is a slower method but once you have been doing it for a few years you have a constant supply each year. It also only requires turning once per year.