– As far as the type of bread goes, anything that’s relatively neutrally flavored will work; so, essentially white or wheat breads will work. It doesn’t matter whether it’s plastic-white bread, artisan boules or baguettes, whole wheat or whole grain Tuscan loafs, focaccia, English muffins, pitas, hamburger or hot dog buns… you get the idea. Don’t use anything that’s been flavored with herbs or cheese or anything like that (it kind of limits the uses of the crumbs if they taste like rosemary or asiago) and, while you can certainly make breadcrumbs out of rye, pumpernickel and sourdough, I would definitely keep them separate from your white/wheat crumbs.