If you see little droplets of water inside the package, it is a sure indicator that the jerky was not dried out properly. When properly dried, beef jerky should never sweat out moisture because there should be almost no moisture to sweat. If you see this problem in a sealed bag of beef jerky, throw it in the trash. If you see this problem in fresh homemade jerky, you can put the meat back into the dehydrator and let it finish drying.