Thank you Jillee! http://www.onegoodthingbyjillee.com/2012/04/crockpot-greek-yogurt.html#comment-11352
Before trying this recipe, read all of the comments. Some are quite helpful, especially the one about using a coffee filter to strain the yoghurt. This recipe will be at the top of my list when I return home in a few days.
By the way, Jillee's One Good Thing blog is worth following. Not sure where she lives, but she is sometimes posting on Pinterest when the rest of the US is sleeping, or should be sleeping.
Yeah, I am almost ready to get back to posting Memaw's recipes. Finding the original cookbook may be a whole new story.