Oh, you did know that?
Well, until a year or so ago, it hadn't occurred to me that I could (and should) be doing this myself. Now, it's a regular practice whenever I have old bread languishing in my pantry. For those who haven't made your own bread crumbs before, it's super easy.
Step One: let old bread sit out for a day or two on a cooling rack.
Now, if there were only some way to make my own croutons instead of buying them at the store...