Take clean, dry (VERY DRY) kale and cut away the stem and centre vein.
-tear/cut into small pieces-
Place a cookie rack on a baking sheet, and spread bite sized pieces of kale on top. Be sure to spread the kale out (cook in multiple batches) or it will just steam and not get crunchy.
Spray lightly with cooking spray and sprinkle with salt. Bake at 300C for 10-12 minutes until edges start to brown.