FACTOID: 70% of all ground beef sold in America contains a filler called pink slime. You’ll have to do your own research to determine, if you can, just what it is. I’ll tell you that describing it involves using words or terms like ammonia treated meat, mechanically separated meat, e-coli, and not fit for human consumption. Just as interesting is that neither the FDA or the USDA requires meat processors and sellers to admit to using pink slime.