This one was taken from Greger's seminal cookbook - the How Not to Diet Cookbook. I've learned that even if a cookbook is utter shit, there will still be one or two recipes that work - with corrections. This is one of those.
If you enjoy bland, tasteless crap with unnecessary steps to make it, then by all means, cook up the original. (If you can even find cavolo nero - I had to look it up because I had no idea what it was) Greger is a genius but he aint no cook!