This one was a hit!
I made some modifications but the basics were all there in the initial recipe.
Served it over red mashed potatoes (skin on!)
I used 3 poblano peppers and I pre-skinned them under the broiler and added a jalapeno pepper seeded and chopped fine.
(blackened, rest in an airtight bowl, scrape of the indigestible clear skin and de-seed)
All beer no beef broth too, double the chili powder and more sprinkled on the meat when I seared it.
I cooked the roast in a dutch oven at 235 for about 5 hours.
Will definitely make again and again.
I will re-write what I did and publish again for sure.
This ones a keeper!