In an attempt to save money, I've been reusing my yeast; I have been pouring off the yeast cake from my primary fermenters into a sanitized jar of water and DME (obviously boiled). I keep this yeast under refrigeration, then I pitch it into a new batch of beer! My method has seemed to work every time; I still brew beers with yeast that I've harvested multiple times.
MY QUESTION: Is this method of harvesting and repitching yeast going to cause me problems down the road? Will my yeast eventually peter-out? Is there something I can do to ensure that my method remains viable and I can continue to save money?
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