I bought the Mountain House dehydrated ice cream bars. They taste good. Mine just have a code also 08157. I use to know how to read these. But they vary with ea. company.
For instance, I could say mine was good until Aug (8) 1 2012(add the 5 & 7), or good until the 157th calendar day of 2008 etc.
It's weird how they do it. But I'm guessing from the packaging, they will last a long time.