Bloodless blood knot

A few years back there was a post regarding tying a knot called the bloodless blood knot.  I used it and had good succes with it but I have forgotten how to tie it now.  Does any one know how to tie this knot?  It was much simpler to tie than a standard blood knot and seem to hold up strength wise just as well.  I've tried to find the old post on the site but I guess is it's too old to still be on here.