I'm relatively new to home brewing and am enjoying brewing 1 gallon batches. I have been using dry yeast and can get about 4 batches from a single packet. I would, however, like to be able to use the wider variety available via liquid yeast but I don't want to waste a yeast packet designed for 5 gallons by throwing away what I don't need for 1 gallon.
How can I seperate and store the liquid yeast I don't use for use in later batches?