Jeff uses Mt. Hood and Cluster these days. The cereal mash is done in a pressure cooker, there was a Zymurgy article on that technique. RO water and a tsp of CaCl2. WLP 833 yeast.
Bob Barrett and I brewed a batch with Jeff last year for the BJCP reception at the Philly NHC. I can post the recipe later, but I am brewing my CAP right now, and am in the boil stage.