Let your yeast breathe!

I was talking with a friend and fellow homebrewer, Bob, yesterday, and he mentioned that one of the bottles he stores his yeast in exploded from the build up of CO2, causing a horrible mess. Imagine the dregs of your carboy splattered off every single surface of the room. So this morning, I made sure to "burp" the caps of all the yeast bottles I have stored. If you save your yeast from one batch to the next, make sure you do this. Don't be like Bob, or your wife will kill you. Luckily for Bob, she wasn't home at the time.