ckreef, nothing special just burgers you say, I beg to differ, any burger cooked over lump on the KK is very special. Every time I do them I wonder why I don't do them more often and yours look awesome.
Absolutely, It is one that I discovered at this site:
http://www.bakingsteel.com/blog/baking-steel-homemade-english-muffins/
I followed the recipe exactly. I love measurements in grams. I hope you do too. They are so much more predictable.