What is the grey edge on packer?

[Steve Petrone]

Wallmart packers all seem to have one edge or side where the meat is grey. What is it? It looks like the exposed edge of a larger cut. Not really thinking about it, I have not trimmed it on some cooks. Today I trimmed a thin slice to get to good virgin beef meat underneath. What should we be doing?

 

[Jerry N.]

I don't know what it is, but I get that on some of my briskets. I have a very basic rule when cooking - if I don't like it, it's gone. I don't like anything grey on my raw meat, so in the case of a brisket, I take a thin slice just like you di to get back to fresh meat.