what is the best way to store yeast to make it last
I've been reading up on this. I bought yeast from costco on 8/13/11 and over the weekend had to throw it out because it lost all of its muster/strength after my dough failed to rise on several bakes. There was like over half left. I kept in a tupperware on the bottom shelf in my frig. And everytime I open it up condensation would enter the yeast, lessening it's strength. I've read where some people just keep it in a baggie in the freezer and just take out what you need for your bakes.
What does everyone here do in storing their yeast to preserve it to last more than one year. It's cheap enough to buy once a year, but still would like to know how everyone stores it.
thanks for your help. Howard