Step 1: Preheat the oven to 390 F (200 C). Step 2: Run the sourdough bread under some running water, or pour water over it until the crust is fully wet. (Try not to get the inside of the bread wet if any of it is exposed).
Stale sourdough bread is an ideal candidate for artisan style, flavorsome breadcrumbs, and they are super easy to make! Step 1: Roughly chop up the stale, hardened bread into chunks. Step 2: Place in a blender (I like to use a hand blender like this one from Amazon; hand blenders are easy to set up and pack away, and take up much less space). Step 3: Blitz the bread until fine breadcrumbs are produced. Step 4: Place in a freezer safe bag and pop in to the freezer for later use.