I just cracked 11 eggs to make a breakfast casserole and even cracked them one at a time in a small bowl to inspect before adding into the main bowl. They all looked fine. As I whisked them together, I noticed some yolk pieces that wouldn't mix well. I figured it was because my bowl wasn't quite large enough and proceeded to scramble them. The firmer pieces never did incorporate and I've found them throughout the scramble. I've searched Google and haven't found anything except for meat spots, which is not what I'm finding. One post from BYC came up and said it's from a good diet, but since there are no pictures, I'm unsure if this is the same thing. I don't know if maybe an egg froze and I didn't realize it or what's going on. I've got to get this casserole in the oven so I guess I will just save these and try again, just in case. I don't want to toss this many eggs. They taste wonderful.