Here are phots taken just now of the mycelium in the agar cups, which is continuing to expand. I hope someone here can guide me as to which areas of the growth to harvest for inoculating grain with. The thin whispy outer parts? The more dense looking outer parts? I await your counsel, with thanks..
Just look for the most vigorous solid white parts. You normally want to avoid parts that are touching the edge (cut before then) but that's just a precaution and probably won't matter in most cases.
These places look good to me: